Гибридная графика Intel/AMD и свободный драйвер

[lineup]

Здравствуйте. Все мусолю темку с ноутом гибридным. Собсна на свободном драйвере по умолчанию работает интеловская GPU, для запуска программ на дискретной использую команду dri_prime=1. В общем, таки работает вроде бы нормально. Однако меня насторожил один момент: команда lspci | grep VGA выдает мне только интеловскую карточку, даже при условии, что на дискретной запущен, ну скажем Gimp.

glxgears
DRI_PRIME=1 glxgears

показывают разный FPS, на DRI_PRIME=1 glxgears гораздо выше, как и должно быть.

Бук Hp Probook 450 G2, Intel Core i5-5200U, AMD Radeon R5 M255. Дистр - Ubuntu 14.04.3 с обновами последними.

[thunderamur]

Код: [Выделить]

DRI_PRIME=1 lspciчто покажет?

[lineup]

Код: [Выделить]

DRI_PRIME=1 lspciчто покажет?

Код: [Выделить]

lspci
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
07:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01)
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
09:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz PRO [Radeon R5 M255]


Код: [Выделить]

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)

Код: [Выделить]

glxgears
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
378 frames in 5.0 seconds = 75.506 FPS
301 frames in 5.0 seconds = 60.052 FPS
301 frames in 5.0 seconds = 60.052 FPS
301 frames in 5.0 seconds = 60.051 FPS
301 frames in 5.0 seconds = 60.052 FPS
301 frames in 5.0 seconds = 60.052 FPS
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
      after 6260 requests (6260 known processed) with 0 events remaining.


Код: [Выделить]

DRI_PRIME=1 glxgears
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
36025 frames in 5.0 seconds = 7204.957 FPS
36687 frames in 5.0 seconds = 7337.344 FPS
34982 frames in 5.0 seconds = 6996.232 FPS
35196 frames in 5.0 seconds = 7039.077 FPS
35270 frames in 5.0 seconds = 7053.945 FPS
36734 frames in 5.0 seconds = 7346.768 FPS
35705 frames in 5.0 seconds = 7140.938 FPS
36483 frames in 5.0 seconds = 7296.589 FPS
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
      after 587665 requests (587665 known processed) with 0 events remaining.