Bug#551663: xserver-xorg-video-intel: Updating to 2.6.30 and KMS breaks DPMS Standby feature
Jonathan Protzenko wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.9.0-1
> Severity: important
>
> I recently upgraded my whole system. This included an upgrade of my intel xorg
> driver which triggered bug 538283 as I was still using 2.6.26. What I did was
> switch to 2.6.30 and enable KMS through the GRUB boot line, which solved the
> bug.
>
> I'm primarily working on a dual-screen setup. I use an external monitor
> (1920x1200) and the laptop's screen only displays the 1024x600 upper left
> portion of the screen.
>
> Running xset dpms force off turns off both screens for a fraction of a second,
> then turns them both back on. I cannot manage to turn off the external screen.
> If I close the lid of the laptop, the laptop's screen turns off, but I am still
> unable to turn off the external screen.
>
> Running xrandr --output VGA1 --off followed by xset dpms force off does not work
> either for the laptop's screen, so I guess this is not related to having and
> external screen.
>
> This feature was working with the previous setup (old xserver-xorg-video-intel
> package, no KMS and 2.6.26).
>
As you might guess, KMS is implemented in the kernel. So if the problem
is actually in KMS/2.6.30, this bug should be reassigned to the kernel
package. Please check with a more recent kernel, 2.6.31 or 2.6.32-rc to
see if it helps first.
Brice
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