Ноут Samsung. Centaurus 7 установленный из образа.
[somebody@host-124 ~]$ uname -r
3.8.13.4-std-def-alt1.M70P.1
При помощи mate-power-manager устанавливаю яркость экрана (~20%). Но после перехода Ctr-Alt-F1...F6,F12 при возвращении в седьмую консоль яркость экрана увеличивается до максимума. Аналогичная ситуация с mplayer, запускаю mplayer и через 10 секунд воспроизведения фильма яркость увеличивается до масимума самопроизвольно. При этом в mate-power-manager движок изменения яркости не меняет своего положения. Если его слегка двинуть вперед-назад, яркость экрана уменьшается до желаемого значения. В /var/log/messages ничего не летит.
На всякий случай:
[root@host-124 ~]# lspci -v
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, fast devsel, latency 0, IRQ 40
Memory at 90000000 (64-bit, non-prefetchable) [size=4M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at 90605000 (64-bit, non-prefetchable) [size=16]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
Kernel driver in use: mei
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI])
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at 9060a000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at 90600000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: 90500000-905fffff
Prefetchable memory behind bridge: 000000007ea00000-000000007eafffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Samsung Electronics Co Ltd Device c652
Capabilities: [a0] Power Management version 2
Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00002000-00002fff
Prefetchable memory behind bridge: 0000000090400000-00000000904fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Samsung Electronics Co Ltd Device c652
Capabilities: [a0] Power Management version 2
Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI])
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at 90609000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation 7 Series Chipset Family LPC Controller (rev 04)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: lpc_ich
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 41
I/O ports at 3088 [size=8]
I/O ports at 3094 [size=4]
I/O ports at 3080 [size=8]
I/O ports at 3090 [size=4]
I/O ports at 3060 [size=32]
Memory at 90608000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA v1.0
Capabilities: [b0] PCI Advanced Features
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: medium devsel, IRQ 18
Memory at 90604000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
01:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
Subsystem: Samsung Electronics Co Ltd Device 4105
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at 90500000 (64-bit, non-prefetchable) [size=512K]
Expansion ROM at 7ea00000 [disabled] [size=64K]
Capabilities: [40] Power Management version 2
Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00
Kernel driver in use: ath9k
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: Samsung Electronics Co Ltd Device c652
Flags: bus master, fast devsel, latency 0, IRQ 42
I/O ports at 2000 [size=256]
Memory at 90404000 (64-bit, prefetchable) [size=4K]
Memory at 90400000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 01-00-00-00-68-4c-e0-00
Kernel driver in use: r8169
На p6 на этой машине такого эффекта не наблюдалось. Как с этим бороться?