После обновления до 16.04 черный экран HD 7480D

[aleks-nl5]

Добрый день!
Друзья, прошу помощи - после обновления с 15.10 до 16.04 драйвер видеокарты перестал корректно работать, читал про прекращение поддержки fglrx, но его я не использовал на 15.10 и соответственно не ожидал проблем с видео после обновления (AMD APU A4-4000, HD 7480D).
Теперь при загрузке - чёрный экран, воспроизводится звук логина Ubuntu и больше ничего, на tty1-6 также черный экран даже курсора нет.
При добавлении параметра загрузки "nomodeset" - Ubuntu загружается, соответственно с жуткими тормозами и нагрузкой на процессор под 90%.
Если же загрузиться со старым ядром - всё летает 

вывод lspci -vnn | grep VGA -A 12 на старом ядре

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00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] [1002:9993] (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Trinity [Radeon HD 7480D] [1462:7792]
   Flags: bus master, fast devsel, latency 0, IRQ 40
   Memory at c0000000 (32-bit, prefetchable) [size=256M]
   I/O ports at f000 [size=256]
   Memory at feb00000 (32-bit, non-prefetchable) [size=256K]
   Expansion ROM at <unassigned> [disabled]
   Capabilities: [50] Power Management version 3
   Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00
   Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
   Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
   Kernel driver in use: radeon
   Kernel modules: radeon
--
   Flags: bus master, VGA palette snoop, 66MHz, medium devsel, latency 64
   Bus: primary=00, secondary=03, subordinate=03, sec-latency=64

вывод lspci -vnn | grep VGA -A 12 на новом ядре

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00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] [1002:9993] (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Trinity [Radeon HD 7480D] [1462:7792]
   Flags: bus master, fast devsel, latency 0
   Memory at c0000000 (32-bit, prefetchable) [size=256M]
   I/O ports at f000 [size=256]
   Memory at feb00000 (32-bit, non-prefetchable) [size=256K]
   Expansion ROM at <unassigned> [disabled]
   Capabilities: [50] Power Management version 3
   Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00
   Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
   Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
   Kernel modules: radeon

--
   Flags: bus master, VGA palette snoop, 66MHz, medium devsel, latency 64
   Bus: primary=00, secondary=03, subordinate=03, sec-latency=64

Xorg.0.log - на старом ядре

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[    30.225]
X.Org X Server 1.18.3
Release Date: 2016-04-04
[    30.225] X Protocol Version 11, Revision 0
[    30.225] Build Operating System: Linux 3.13.0-85-generic x86_64 Ubuntu
[    30.225] Current Operating System: Linux my-ubuntu 4.2.0-35-generic #40-Ubuntu SMP Tue Mar 15 22:15:45 UTC 2016 x86_64
[    30.225] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic root=UUID=374f4e93-a009-42be-bdf3-2ad1812a68eb ro quiet splash vt.handoff=7
[    30.225] Build Date: 07 April 2016  09:18:50AM
[    30.225] xorg-server 2:1.18.3-1ubuntu2 (For technical support please see http://www.ubuntu.com/support)
[    30.225] Current version of pixman: 0.33.6
[    30.225]    Before reporting problems, check http://wiki.x.org
   to make sure that you have the latest version.
[    30.225] Markers: (--) probed, (**) from config file, (==) default setting,
   (++) from command line, (!!) notice, (II) informational,
   (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    30.225] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Apr 22 15:24:32 2016
[    30.231] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    30.231] (==) No Layout section.  Using the first Screen section.
[    30.231] (==) No screen section available. Using defaults.
[    30.231] (**) |-->Screen "Default Screen Section" (0)
[    30.231] (**) |   |-->Monitor "<default monitor>"
[    30.231] (==) No monitor specified for screen "Default Screen Section".
   Using a default monitor configuration.
[    30.231] (==) Automatically adding devices
[    30.231] (==) Automatically enabling devices
[    30.231] (==) Automatically adding GPU devices
[    30.231] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    30.231] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    30.231]    Entry deleted from font path.
[    30.231] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[    30.231]    Entry deleted from font path.
[    30.231] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[    30.231]    Entry deleted from font path.
[    30.231] (==) FontPath set to:
   /usr/share/fonts/X11/misc,
   /usr/share/fonts/X11/75dpi/:unscaled,
   /usr/share/fonts/X11/Type1,
   /usr/share/fonts/X11/75dpi,
   built-ins
[    30.231] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[    30.231] (II) The server relies on udev to provide the list of input devices.
   If no devices become available, reconfigure udev or disable AutoAddDevices.
[    30.231] (II) Loader magic: 0x5569e9593da0
[    30.231] (II) Module ABI versions:
[    30.231]    X.Org ANSI C Emulation: 0.4
[    30.231]    X.Org Video Driver: 20.0
[    30.231]    X.Org XInput driver : 22.1
[    30.231]    X.Org Server Extension : 9.0
[    30.232] (++) using VT number 7

[    30.232] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    30.232] (II) xfree86: Adding drm device (/dev/dri/card0)
[    30.234] (--) PCI:*(0:0:1:0) 1002:9993:1462:7792 rev 0, Mem @ 0xc0000000/268435456, 0xfeb00000/262144, I/O @ 0x0000f000/256
[    30.234] (II) LoadModule: "glx"
[    30.262] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    30.380] (II) Module glx: vendor="X.Org Foundation"
[    30.380]    compiled for 1.18.3, module version = 1.0.0
[    30.380]    ABI class: X.Org Server Extension, version 9.0
[    30.380] (==) AIGLX enabled
[    30.380] (==) Matched ati as autoconfigured driver 0
[    30.380] (==) Matched ati as autoconfigured driver 1
[    30.380] (==) Matched modesetting as autoconfigured driver 2
[    30.380] (==) Matched fbdev as autoconfigured driver 3
[    30.380] (==) Matched vesa as autoconfigured driver 4
[    30.380] (==) Assigned the driver to the xf86ConfigLayout
[    30.380] (II) LoadModule: "ati"
[    30.380] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[    30.380] (II) Module ati: vendor="X.Org Foundation"
[    30.380]    compiled for 1.18.3, module version = 7.7.0
[    30.380]    Module class: X.Org Video Driver
[    30.380]    ABI class: X.Org Video Driver, version 20.0
[    30.380] (II) LoadModule: "radeon"
[    30.380] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
[    30.391] (II) Module radeon: vendor="X.Org Foundation"
[    30.391]    compiled for 1.18.3, module version = 7.7.0
[    30.391]    Module class: X.Org Video Driver
[    30.391]    ABI class: X.Org Video Driver, version 20.0
[    30.391] (II) LoadModule: "modesetting"
[    30.391] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    30.391] (II) Module modesetting: vendor="X.Org Foundation"
[    30.391]    compiled for 1.18.3, module version = 1.18.3
[    30.391]    Module class: X.Org Video Driver
[    30.391]    ABI class: X.Org Video Driver, version 20.0
[    30.391] (II) LoadModule: "fbdev"
[    30.391] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[    30.391] (II) Module fbdev: vendor="X.Org Foundation"
[    30.391]    compiled for 1.18.1, module version = 0.4.4
[    30.391]    Module class: X.Org Video Driver
[    30.391]    ABI class: X.Org Video Driver, version 20.0
[    30.391] (II) LoadModule: "vesa"
[    30.392] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[    30.392] (II) Module vesa: vendor="X.Org Foundation"
[    30.392]    compiled for 1.18.1, module version = 2.3.4
[    30.392]    Module class: X.Org Video Driver
[    30.392]    ABI class: X.Org Video Driver, version 20.0
[    30.392] (II) RADEON: Driver for ATI Radeon chipsets:
   ----
[    30.397] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    30.397] (II) FBDEV: driver for framebuffer: fbdev
[    30.397] (II) VESA: driver for VESA chipsets: vesa
[    30.400] (II) [KMS] Kernel modesetting enabled.
[    30.400] (WW) Falling back to old probe method for modesetting
[    30.400] (WW) Falling back to old probe method for fbdev
[    30.400] (II) Loading sub module "fbdevhw"
[    30.400] (II) LoadModule: "fbdevhw"
[    30.400] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    30.400] (II) Module fbdevhw: vendor="X.Org Foundation"
[    30.400]    compiled for 1.18.3, module version = 0.0.2
[    30.400]    ABI class: X.Org Video Driver, version 20.0
[    30.400] (WW) Falling back to old probe method for vesa
[    30.400] (II) RADEON(0): Creating default Display subsection in Screen section
   "Default Screen Section" for depth/fbbpp 24/32
[    30.400] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
[    30.400] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[    30.400] (==) RADEON(0): Default visual is TrueColor
[    30.400] (==) RADEON(0): RGB weight 888
[    30.401] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
[    30.401] (--) RADEON(0): Chipset: "ARUBA" (ChipID = 0x9993)
[    30.401] (II) Loading sub module "fb"
[    30.401] (II) LoadModule: "fb"
[    30.401] (II) Loading /usr/lib/xorg/modules/libfb.so
[    30.401] (II) Module fb: vendor="X.Org Foundation"
[    30.401]    compiled for 1.18.3, module version = 1.0.0
[    30.401]    ABI class: X.Org ANSI C Emulation, version 0.4
[    30.401] (II) Loading sub module "dri2"
[    30.401] (II) LoadModule: "dri2"
[    30.401] (II) Module "dri2" already built-in
[    30.401] (II) Loading sub module "exa"
[    30.401] (II) LoadModule: "exa"
[    30.401] (II) Loading /usr/lib/xorg/modules/libexa.so
[    30.401] (II) Module exa: vendor="X.Org Foundation"
[    30.401]    compiled for 1.18.3, module version = 2.6.0
[    30.401]    ABI class: X.Org Video Driver, version 20.0
[    30.401] (II) RADEON(0): KMS Color Tiling: enabled
[    30.401] (II) RADEON(0): KMS Color Tiling 2D: enabled
[    30.401] (II) RADEON(0): KMS Pageflipping: enabled
[    30.401] (II) RADEON(0): SwapBuffers wait for vsync: enabled
[    30.402] (II) RADEON(0): Output HDMI-0 has no monitor section
[    30.516] (II) RADEON(0): Output VGA-0 has no monitor section
[    30.524] (II) RADEON(0): Output DisplayPort-0 has no monitor section
[    30.525] (II) RADEON(0): EDID for output HDMI-0
[    30.640] (II) RADEON(0): EDID for output VGA-0
[    30.640] (II) RADEON(0): Manufacturer: SAM  Model: 11e  Serial#: 1296707895
[    30.640] (II) RADEON(0): Year: 2006  Week: 34
[    30.640] (II) RADEON(0): EDID Version: 1.3
[    30.640] (II) RADEON(0): Analog Display Input,  Input Voltage Level: 0.700/0.700 V
[    30.640] (II) RADEON(0): Sync:  Separate  Composite
[    30.640] (II) RADEON(0): Max Image Size [cm]: horiz.: 34  vert.: 27
[    30.640] (II) RADEON(0): Gamma: 2.20
[    30.640] (II) RADEON(0): DPMS capabilities: Off; RGB/Color Display
[    30.640] (II) RADEON(0): First detailed timing is preferred mode
[    30.640] (II) RADEON(0): redX: 0.650 redY: 0.330   greenX: 0.330 greenY: 0.600
[    30.640] (II) RADEON(0): blueX: 0.150 blueY: 0.080   whiteX: 0.313 whiteY: 0.329
[    30.640] (II) RADEON(0): Supported established timings:
[    30.640] (II) RADEON(0): 720x400@70Hz
[    30.640] (II) RADEON(0): 640x480@60Hz
[    30.640] (II) RADEON(0): 640x480@67Hz
[    30.640] (II) RADEON(0): 640x480@72Hz
[    30.640] (II) RADEON(0): 640x480@75Hz
[    30.640] (II) RADEON(0): 800x600@56Hz
[    30.640] (II) RADEON(0): 800x600@60Hz
[    30.640] (II) RADEON(0): 800x600@72Hz
[    30.640] (II) RADEON(0): 800x600@75Hz
[    30.640] (II) RADEON(0): 832x624@75Hz
[    30.640] (II) RADEON(0): 1024x768@60Hz
[    30.640] (II) RADEON(0): 1024x768@70Hz
[    30.640] (II) RADEON(0): 1024x768@75Hz
[    30.640] (II) RADEON(0): 1280x1024@75Hz
[    30.640] (II) RADEON(0): 1152x864@75Hz
[    30.640] (II) RADEON(0): Manufacturer's mask: 0
[    30.640] (II) RADEON(0): Supported standard timings:
[    30.640] (II) RADEON(0): #0: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[    30.640] (II) RADEON(0): #1: hsize: 1152  vsize 864  refresh: 75  vid: 20337
[    30.640] (II) RADEON(0): Supported detailed timing:
[    30.640] (II) RADEON(0): clock: 108.0 MHz   Image Size:  338 x 270 mm
[    30.640] (II) RADEON(0): h_active: 1280  h_sync: 1328  h_sync_end 1440 h_blank_end 1688 h_border: 0
[    30.640] (II) RADEON(0): v_active: 1024  v_sync: 1025  v_sync_end 1028 v_blanking: 1066 v_border: 0
[    30.640] (II) RADEON(0): Ranges: V min: 56 V max: 75 Hz, H min: 30 H max: 81 kHz, PixClock max 145 MHz
[    30.640] (II) RADEON(0): Monitor name: SyncMaster
[    30.640] (II) RADEON(0): Serial No: HMGL802138
[    30.640] (II) RADEON(0): EDID (in hex):
[    30.640] (II) RADEON(0):    00ffffffffffff004c2d1e0137314a4d
[    30.640] (II) RADEON(0):    221001036c221b782aaaa5a654549926
[    30.640] (II) RADEON(0):    145054bfef808180714f010101010101
[    30.640] (II) RADEON(0):    010101010101302a009851002a403070
[    30.640] (II) RADEON(0):    1300520e1100001e000000fd00384b1e
[    30.640] (II) RADEON(0):    510e000a202020202020000000fc0053
[    30.640] (II) RADEON(0):    796e634d61737465720a2020000000ff
[    30.640] (II) RADEON(0):    00484d474c3830323133380a20200033
[    30.640] (II) RADEON(0): Printing probed modes for output VGA-0
[    30.640] (II) RADEON(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz eP)
[    30.640] (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[    30.640] (II) RADEON(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[    30.640] (II) RADEON(0): Modeline "1024x768"x75.1   78.80  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.1 kHz e)
[    30.640] (II) RADEON(0): Modeline "1024x768"x70.1   75.00  1024 1048 1184 1328  768 771 777 806 -hsync -vsync (56.5 kHz e)
[    30.640] (II) RADEON(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[    30.640] (II) RADEON(0): Modeline "832x624"x74.6   57.28  832 864 928 1152  624 625 628 667 -hsync -vsync (49.7 kHz e)
[    30.640] (II) RADEON(0): Modeline "800x600"x72.2   50.00  800 856 976 1040  600 637 643 666 +hsync +vsync (48.1 kHz e)
[    30.640] (II) RADEON(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[    30.640] (II) RADEON(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[    30.640] (II) RADEON(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz e)
[    30.640] (II) RADEON(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[    30.640] (II) RADEON(0): Modeline "640x480"x72.8   31.50  640 664 704 832  480 489 491 520 -hsync -vsync (37.9 kHz e)
[    30.640] (II) RADEON(0): Modeline "640x480"x66.7   30.24  640 704 768 864  480 483 486 525 -hsync -vsync (35.0 kHz e)
[    30.640] (II) RADEON(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[    30.640] (II) RADEON(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[    30.648] (II) RADEON(0): EDID for output DisplayPort-0
[    30.648] (II) RADEON(0): Output HDMI-0 disconnected
[    30.648] (II) RADEON(0): Output VGA-0 connected
[    30.648] (II) RADEON(0): Output DisplayPort-0 disconnected
[    30.648] (II) RADEON(0): Using exact sizes for initial modes
[    30.648] (II) RADEON(0): Output VGA-0 using initial mode 1280x1024 +0+0
[    30.648] (II) RADEON(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
[    30.648] (II) RADEON(0): mem size init: gart size :3fdcc000 vram size: s:30000000 visible:2f614000
[    30.648] (II) RADEON(0): EXA: Driver will allow EXA pixmaps in VRAM
[    30.648] (==) RADEON(0): DPI set to (96, 96)
[    30.648] (II) Loading sub module "ramdac"
[    30.648] (II) LoadModule: "ramdac"
[    30.648] (II) Module "ramdac" already built-in
[    30.648] (II) UnloadModule: "modesetting"
[    30.648] (II) Unloading modesetting
[    30.648] (II) UnloadModule: "fbdev"
[    30.648] (II) Unloading fbdev
[    30.648] (II) UnloadSubModule: "fbdevhw"
[    30.648] (II) Unloading fbdevhw
[    30.648] (II) UnloadModule: "vesa"
[    30.648] (II) Unloading vesa
[    30.648] (--) Depth 24 pixmap format is 32 bpp
[    30.648] (II) RADEON(0): [DRI2] Setup complete
[    30.648] (II) RADEON(0): [DRI2]   DRI driver: r600
[    30.648] (II) RADEON(0): [DRI2]   VDPAU driver: r600
[    30.648] (II) RADEON(0): Front buffer size: 5120K
[    30.648] (II) RADEON(0): VRAM usage limit set to 693979K
[    30.648] (==) RADEON(0): DRI3 disabled
[    30.648] (==) RADEON(0): Backing store enabled
[    30.648] (II) RADEON(0): Direct rendering enabled
[    30.648] (II) EXA(0): Driver allocated offscreen pixmaps
[    30.648] (II) EXA(0): Driver registered support for the following operations:

Xorg.0.log - на новом ядре

(Нажмите, чтобы показать/скрыть)

[    28.037]
X.Org X Server 1.18.3
Release Date: 2016-04-04
[    28.037] X Protocol Version 11, Revision 0
[    28.037] Build Operating System: Linux 3.13.0-85-generic x86_64 Ubuntu
[    28.037] Current Operating System: Linux my-ubuntu 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64
[    28.037] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=374f4e93-a009-42be-bdf3-2ad1812a68eb ro quiet splash nomodeset vt.handoff=7
[    28.037] Build Date: 07 April 2016  09:18:50AM
[    28.037] xorg-server 2:1.18.3-1ubuntu2 (For technical support please see http://www.ubuntu.com/support)
[    28.037] Current version of pixman: 0.33.6
[    28.037]    Before reporting problems, check http://wiki.x.org
   to make sure that you have the latest version.
[    28.037] Markers: (--) probed, (**) from config file, (==) default setting,
   (++) from command line, (!!) notice, (II) informational,
   (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    28.037] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Apr 22 16:56:00 2016
[    28.048] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    28.048] (==) No Layout section.  Using the first Screen section.
[    28.048] (==) No screen section available. Using defaults.
[    28.048] (**) |-->Screen "Default Screen Section" (0)
[    28.048] (**) |   |-->Monitor "<default monitor>"
[    28.054] (==) No monitor specified for screen "Default Screen Section".
   Using a default monitor configuration.
[    28.054] (==) Automatically adding devices
[    28.054] (==) Automatically enabling devices
[    28.054] (==) Automatically adding GPU devices
[    28.054] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    28.054] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    28.054]    Entry deleted from font path.
[    28.054] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[    28.054]    Entry deleted from font path.
[    28.055] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[    28.055]    Entry deleted from font path.
[    28.055] (==) FontPath set to:
   /usr/share/fonts/X11/misc,
   /usr/share/fonts/X11/75dpi/:unscaled,
   /usr/share/fonts/X11/Type1,
   /usr/share/fonts/X11/75dpi,
   built-ins
[    28.055] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[    28.055] (II) The server relies on udev to provide the list of input devices.
   If no devices become available, reconfigure udev or disable AutoAddDevices.
[    28.055] (II) Loader magic: 0x559860be5da0
[    28.055] (II) Module ABI versions:
[    28.055]    X.Org ANSI C Emulation: 0.4
[    28.055]    X.Org Video Driver: 20.0
[    28.055]    X.Org XInput driver : 22.1
[    28.055]    X.Org Server Extension : 9.0
[    28.055] (++) using VT number 7

[    28.055] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    28.056] (--) PCI:*(0:0:1:0) 1002:9993:1462:7792 rev 0, Mem @ 0xc0000000/268435456, 0xfeb00000/262144, I/O @ 0x0000f000/256
[    28.057] (II) LoadModule: "glx"
[    28.063] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    28.181] (II) Module glx: vendor="X.Org Foundation"
[    28.181]    compiled for 1.18.3, module version = 1.0.0
[    28.181]    ABI class: X.Org Server Extension, version 9.0
[    28.181] (==) AIGLX enabled
[    28.181] (==) Matched ati as autoconfigured driver 0
[    28.181] (==) Matched modesetting as autoconfigured driver 1
[    28.181] (==) Matched fbdev as autoconfigured driver 2
[    28.181] (==) Matched vesa as autoconfigured driver 3
[    28.181] (==) Assigned the driver to the xf86ConfigLayout
[    28.181] (II) LoadModule: "ati"
[    28.181] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[    28.181] (II) Module ati: vendor="X.Org Foundation"
[    28.181]    compiled for 1.18.3, module version = 7.7.0
[    28.181]    Module class: X.Org Video Driver
[    28.181]    ABI class: X.Org Video Driver, version 20.0
[    28.181] (II) LoadModule: "radeon"
[    28.181] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
[    28.209] (II) Module radeon: vendor="X.Org Foundation"
[    28.209]    compiled for 1.18.3, module version = 7.7.0
[    28.209]    Module class: X.Org Video Driver
[    28.209]    ABI class: X.Org Video Driver, version 20.0
[    28.209] (II) LoadModule: "modesetting"
[    28.209] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    28.209] (II) Module modesetting: vendor="X.Org Foundation"
[    28.209]    compiled for 1.18.3, module version = 1.18.3
[    28.209]    Module class: X.Org Video Driver
[    28.209]    ABI class: X.Org Video Driver, version 20.0
[    28.209] (II) LoadModule: "fbdev"
[    28.209] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[    28.209] (II) Module fbdev: vendor="X.Org Foundation"
[    28.209]    compiled for 1.18.1, module version = 0.4.4
[    28.209]    Module class: X.Org Video Driver
[    28.209]    ABI class: X.Org Video Driver, version 20.0
[    28.209] (II) LoadModule: "vesa"
[    28.209] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[    28.209] (II) Module vesa: vendor="X.Org Foundation"
[    28.209]    compiled for 1.18.1, module version = 2.3.4
[    28.209]    Module class: X.Org Video Driver
[    28.209]    ABI class: X.Org Video Driver, version 20.0
[    28.209] (II) RADEON: Driver for ATI Radeon chipsets:
   
   ---

[    28.214] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    28.214] (II) FBDEV: driver for framebuffer: fbdev
[    28.214] (II) VESA: driver for VESA chipsets: vesa
[    28.232] (II) [KMS] drm report modesetting isn't supported.
[    28.232] (EE) open /dev/dri/card0: No such file or directory
[    28.232] (WW) Falling back to old probe method for modesetting
[    28.232] (EE) open /dev/dri/card0: No such file or directory
[    28.232] (II) Loading sub module "fbdevhw"
[    28.232] (II) LoadModule: "fbdevhw"
[    28.232] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    28.232] (II) Module fbdevhw: vendor="X.Org Foundation"
[    28.232]    compiled for 1.18.3, module version = 0.0.2
[    28.232]    ABI class: X.Org Video Driver, version 20.0
[    28.232] (**) FBDEV(2): claimed PCI slot 0@0:1:0
[    28.232] (II) FBDEV(2): using default device
[    28.232] (WW) Falling back to old probe method for vesa
[    28.232] (EE) Screen 0 deleted because of no matching config section.
[    28.232] (II) UnloadModule: "radeon"
[    28.232] (EE) Screen 0 deleted because of no matching config section.
[    28.232] (II) UnloadModule: "modesetting"
[    28.232] (II) FBDEV(0): Creating default Display subsection in Screen section
   "Default Screen Section" for depth/fbbpp 24/32
[    28.232] (==) FBDEV(0): Depth 24, (==) framebuffer bpp 32
[    28.232] (==) FBDEV(0): RGB weight 888
[    28.232] (==) FBDEV(0): Default visual is TrueColor
[    28.232] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
[    28.232] (II) FBDEV(0): hardware: VESA VGA (video memory: 5120kB)
[    28.232] (II) FBDEV(0): checking modes against framebuffer device...
[    28.232] (II) FBDEV(0): checking modes against monitor...
[    28.232] (--) FBDEV(0): Virtual size is 1280x1024 (pitch 1280)
[    28.232] (**) FBDEV(0):  Built-in mode "current": 131.1 MHz, 80.3 kHz, 76.6 Hz
[    28.232] (II) FBDEV(0): Modeline "current"x0.0  131.09  1280 1312 1472 1632  1024 1028 1032 1048 -hsync -vsync -csync (80.3 kHz b)
[    28.232] (==) FBDEV(0): DPI set to (96, 96)
[    28.232] (II) Loading sub module "fb"
[    28.232] (II) LoadModule: "fb"
[    28.232] (II) Loading /usr/lib/xorg/modules/libfb.so
[    28.238] (II) Module fb: vendor="X.Org Foundation"
[    28.238]    compiled for 1.18.3, module version = 1.0.0
[    28.238]    ABI class: X.Org ANSI C Emulation, version 0.4
[    28.238] (**) FBDEV(0): using shadow framebuffer
[    28.238] (II) Loading sub module "shadow"
[    28.238] (II) LoadModule: "shadow"
[    28.238] (II) Loading /usr/lib/xorg/modules/libshadow.so
[    28.250] (II) Module shadow: vendor="X.Org Foundation"
[    28.250]    compiled for 1.18.3, module version = 1.1.0
[    28.250]    ABI class: X.Org ANSI C Emulation, version 0.4
[    28.250] (II) UnloadModule: "vesa"
[    28.250] (II) Unloading vesa
[    28.250] (==) Depth 24 pixmap format is 32 bpp
[    28.250] (II) FBDEV(0): FBIOBLANK: Invalid argument (Screen blanking not supported by kernel - disabling)
[    28.252] (==) FBDEV(0): Backing store enabled
[    28.252] (==) FBDEV(0): DPMS enabled
[    28.252] (==) RandR enabled
[    28.257] (II) SELinux: Disabled on system
[    28.257] (II) AIGLX: Screen 0 is not DRI2 capable
[    28.257] (EE) AIGLX: reverting to software rendering
[    28.767] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[    28.768] (II) AIGLX: Loaded and initialized swrast
[    28.768] (II) GLX: Initialized DRISWRAST GL provider for screen 0

PS. Во время одного из ребутов на новом ядре ОС завелась нормально, но перезагрузив снова (для уверенности) получил ту же проблему 

[aleks-nl5]

Решил попытать счастье и переустановил ОС с сохранением /home:
в live режиме всё работало отлично, но при первой же загрузке стало понятно, что ситуация та же, помогало добавление в строку загрузки ядра "nomodeset", но естественно система ужасно тормозила.
Решил обновить ядро при помощи UKUU, установил самое свежее стабильное ядро - 4.5.4-040504 и всё стало работать нормально, перезагружал ПК с десяток раз.

[AlexBKost]

... установил самое свежее стабильное ядро - 4.5.4-040504 и всё стало работать нормально, перезагружал ПК с десяток раз.

Интересно, как это объяснить? Чего такого появилось в ядре 4.5.4, чего не оказалось в ядре 4.4, но ранее в ядре 4.2 присутствовало?

Какие будут мнения у уважаемых гуру?

[aleks-nl5]

Решил обновить ядро при помощи UKUU, установил самое свежее стабильное ядро - 4.5.4-040504 и всё стало работать нормально, перезагружал ПК с десяток раз.

Ради эксперимента обновился до ядра 4.6.0-040600, так же всё замечательно.

Интересно, как это объяснить? Чего такого появилось в ядре 4.5.4, чего не оказалось в ядре 4.4, но ранее в ядре 4.2 присутствовало?

Какие будут мнения у уважаемых гуру?

Я явно не гуру, но добавлю, что возможно это в какой-то степени связано с отказом от Каталиста или регрессией открытого драйвера. Видимо тут нужно листать чэнджлоги ядер, в чём я не силён...

[AlexBKost]

Я явно не гуру, но добавлю, что возможно это в какой-то степени связано с отказом от Каталиста или регрессией открытого драйвера.

Тут явное противоречие — отказ от Каталиста был вызван как раз прогрессом открытого драйвера, как они сами (отказники) считают (я нет) и отсутствием необходимости разрабатывать новую версию Каталиста под Xserver 1.18.
Потому я о обратился к гуру — ну должен же быть на форуме хоть один человек, способный объяснить на пыльцах, что происходит. А если его НЕТ, нет Каталиста и система не заводится на текущем ядре — совсем ПЕЧАЛЬ.

[alch16]

Ситуация почти такая же. Установил Ubuntu 16.04 LTS с нуля на новый диск. Графика Radeon HD 6550D. После запуска - черный экран. Помогает nomodeset в параметрах загрузки системы. Но в этом случае графика жутко тормозит.
В логах видно, что драйвер radeon система на подхватывает.
Посмотрел версию ядра - 4.4.0-хх (UKUU показывает 4.4-wily).
С помощью UKUU установил сначала 4.4.9-xenial, затем 4.4.14-xenial.
Оба ядра отлично работают - графика ожила.

Я не гуру, спецы прокомментируйте... 

[AlexBKost]

В логах видно, что драйвер radeon система на подхватывает.

Совершенно верно - это потому, что с параметром nomodeset графика грузится на драйвере vesa, потому и жутко тормозит.