Hi,
I have noticed the following problems with the ACPI video functionality on my Thinkpad T60p
laptop:
- The kernel is likely to lock up when the video.ko modules loads, if nmi_watchdog=1
- The VID/ directory appears twice in the /proc/acpi/video/ directory:
$ ls -alis /proc/acpi/video/
total 0
4026532147 0 dr-xr-xr-x 4 root root 0 2007-07-24 22:17 .
4026531915 0 dr-xr-xr-x 12 root root 0 2007-07-24 19:27 ..
4026532169 0 dr-xr-xr-x 5 root root 0 2007-07-24 22:17 VID
4026532169 0 dr-xr-xr-x 5 root root 0 2007-07-24 22:17 VID
- Close the laptop lid, wait a bit, open the lid again, and the X server has crashed. (The kernel
survives, but the screen is a multi-coloured mess. Ctrl-Alt-Backspace still works, though.)
ACPI: SSDT 7FEF1D36, 02C4 (r1 PmRef Cpu0Ist 100 INTL 20050513)
ACPI: SSDT 7FEF207F, 065A (r1 PmRef Cpu0Cst 100 INTL 20050513)
Monitor-Mwait will be used to enter C-1 state
Monitor-Mwait will be used to enter C-2 state
Monitor-Mwait will be used to enter C-3 state
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU0] (supports 8 throttling states)
ACPI: SSDT 7FEF1C6E, 00C8 (r1 PmRef Cpu1Ist 100 INTL 20050513)
ACPI: SSDT 7FEF1FFA, 0085 (r1 PmRef Cpu1Cst 100 INTL 20050513)
ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU1] (supports 8 throttling states)
ACPI: Thermal Zone [THM0] (35 C)
ACPI: Thermal Zone [THM1] (37 C)
...
ACPI: AC Adapter [AC] (on-line)
ACPI: Battery Slot [BAT0] (battery present)
ACPI: ACPI Dock Station Driver
ACPI: \_SB_.PCI0.IDE0.PRIM.MSTR: found ejectable bay
ACPI: \_SB_.PCI0.IDE0.PRIM.MSTR: Adding notify handler
ACPI: Bay [\_SB_.PCI0.IDE0.PRIM.MSTR] Added
input: Power Button (FF) as /class/input/input3
ACPI: Power Button (FF) [PWRF]
input: Lid Switch as /class/input/input4
ACPI: Lid Switch [LID]
input: Sleep Button (CM) as /class/input/input5
ACPI: Sleep Button (CM) [SLPB]
set_level status: 0
ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
set_level status: 0
ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
Cheers,
Chris
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