On Thu, 2011-03-17 at 13:16 +0100, Tobias Küster wrote:
> Package: linux-2.6
> Version: 2.6.32-30
> Severity: important
> Tags: upstream
>
> After updating the packages 'linux-base' and 'linux-image-2.6.32-5-686' from
> version 2.6.32-30 (stable) to 2.6.32-31 (squeeze-proposed-updates) and
> restarting the system, my mouse pointer was not shown any more. The mouse and
> other pointing devices were still usable (move, click, rightclick, context
> menus, hover-effects on icons and menus), only the pointer was not visible.
> Switching to another mouse pointer theme did not solve the problem, either.
There are two bug fixes in -31 that would affect an i855 GPU:
drm/i915: overlay on gen2 can't address above 1G
This should only affect custom kernel packages. However, if you have
more than 1 GB RAM in this system, please test with the extra kernel
parameter 'mem=1G'.
drm/i915: add pipe A force quirks to i915 driver
There is a common BIOS bug: during suspend, it tries to use the GPU
after it has been completely stopped by the driver, which causes the
system to hang. The X driver had a workaround for this, but that was
lost in the switch to Kernel Mode Setting. This restores the
workaround, in the kernel driver.
Did you ever experience that bug (failure to suspend) in Linux 2.6.32?
Does the current bug disappear if you disable Kernel Mode Setting
(rename the file /etc/modprobe.d/i915-kms.conf to i915-kms.conf.disabled
and reboot)?
[...]
> I am running Debian Squeeze Stable on a Asus M2400N Laptop (from mid 2003) with
> Intel 855 graphics. I have to boot with the 'nolapic' option and have no 3D
> acceleration, but otherwise my system is running fine again, after downgrading
> the kernel.
[...]
What do you mean when you say 'no 3D acceleration'? The i855 GPU
certainly has some 3D functionality. Is it disabled in some way, or are
you just not using it?
Ben.
--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
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