Re: video module limited after suspend

Jan Rychter
2005-06-22T09:17:09Z

> Hi,
> I have ACPI compiled into the kernel and various subsystems as
> modules. The 'video' module seems to have a problem, though -- it works
> great on first boot, but doesn't work correctly after a suspend/resume
> (I'm using suspend2, unloading and reloading the video module after
> resuming).
>
> The symptoms are that all subdirectories of /proc/acpi/video/VGA/
> disappear -- which means I can no longer set the LCD brighness. All I
> have is this:
>
> total 0
> -r--r--r-- 1 root root 0 Jun 17 18:25 DOS
> -r--r--r-- 1 root root 0 Jun 17 18:25 POST
> -r--r--r-- 1 root root 0 Jun 17 18:25 POST_info
> -r--r--r-- 1 root root 0 Jun 17 18:25 ROM
> -r--r--r-- 1 root root 0 Jun 17 18:25 info
>
> Any hints?

To narrow things down a bit: I've found out that it isn't really
suspending that matters -- just doing

modprobe video; rmmod video; modprobe video

gets me a system without the CRT, LCD, DVI and TV directories.

As a workaround, I've just compiled video into the kernel (e.g. not
modularized) and I'm fine.

Is anyone actually interested in those bug reports? Should I bother?

--J.