Похожая проблема, ноут Acer 5520g, после обновления до 10ки.
Только у меня всё еще хуже, ВайФайка вообще не поднимается, не видит ни одну сеть.
И на 21, и на 22 ядре такая же картина.
r0b1n@r0b1n-laptop:~$ dmesg
...
[ 1885.107806] ath5k phy0: noise floor calibration timeout (2467MHz)
[ 1885.557040] ath5k phy0: gain calibration timeout (2472MHz)
[ 1885.879822] ath5k phy0: noise floor calibration timeout (2472MHz)
[ 1937.053638] __ratelimit: 2 callbacks suppressed
[ 1937.053642] ath5k phy0: gain calibration timeout (2412MHz)
[ 1937.376974] ath5k phy0: noise floor calibration timeout (2412MHz)
[ 1937.757413] ath5k phy0: gain calibration timeout (2417MHz)
[ 1938.080040] ath5k phy0: noise floor calibration timeout (2417MHz)
[ 1938.462652] ath5k phy0: gain calibration timeout (2422MHz)
[ 1938.785635] ath5k phy0: noise floor calibration timeout (2422MHz)
[ 1939.165867] ath5k phy0: gain calibration timeout (2427MHz)
[ 1939.489558] ath5k phy0: noise floor calibration timeout (2427MHz)
[ 1939.869657] ath5k phy0: gain calibration timeout (2432MHz)
[ 1940.192753] ath5k phy0: noise floor calibration timeout (2432MHz)
[ 1942.689773] __ratelimit: 6 callbacks suppressed
[ 1942.689778] ath5k phy0: gain calibration timeout (2452MHz)
[ 1943.013093] ath5k phy0: noise floor calibration timeout (2452MHz)
[ 1943.393744] ath5k phy0: gain calibration timeout (2457MHz)
[ 1943.716981] ath5k phy0: noise floor calibration timeout (2457MHz)
[ 1944.097853] ath5k phy0: gain calibration timeout (2462MHz)
[ 1944.421396] ath5k phy0: noise floor calibration timeout (2462MHz)
r0b1n@r0b1n-laptop:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
pan0 no wireless extensions.
r0b1n@r0b1n-laptop:~$ lspci
00:00.0 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2)
00:01.0 ISA bridge: nVidia Corporation MCP67 ISA Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation MCP67 SMBus (rev a2)
00:01.2 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2)
00:01.3 Co-processor: nVidia Corporation MCP67 Co-processor (rev a2)
00:02.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2)
00:02.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2)
00:04.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2)
00:04.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2)
00:06.0 IDE interface: nVidia Corporation MCP67 IDE Controller (rev a1)
00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
00:08.0 PCI bridge: nVidia Corporation MCP67 PCI Bridge (rev a2)
00:09.0 IDE interface: nVidia Corporation MCP67 AHCI Controller (rev a2)
00:0a.0 Ethernet controller: nVidia Corporation MCP67 Ethernet (rev a2)
00:0b.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
00:0c.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
00:0d.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:04.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
01:04.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
01:04.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
01:04.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
02:00.0 VGA compatible controller: nVidia Corporation G86 [GeForce 8600M GS] (rev a1)
05:00.0 Ethernet controller: Atheros Communications Inc. AR5001 Wireless Network Adapter (rev 01)