Bug#567563: Workarounds

2010-02-04 Thread Tarek Soliman
On Thu, Feb 04, 2010 at 07:32:47AM +0100, Brice Goglin wrote:
 Tarek Soliman wrote:
  This is caused by the fix to bug #555906 (enable KMS in the module)

 
 No, this is caused by KMS, not by the fix.
 

Fair enough.

  Here's 2 different workarounds:
 
  1 - enable KMS in the kernel

 
 What do you mean ? Set I915_KMS in the kernel config ? It shouldn't make
 any difference. Both enable KMS.
 
 

What I meant was adding something to the linux command line. I think it was
modeset=1

I tried the kernel command line a week or so ago. I was messing with the
modprobe configuration yesterday so things may have changed between then and
now.

If I use the command line vga=i915 then I get a blank screen until X loads up
(I use kdm)

I am talking about stock debian kernels. Specifically about 2.6.32-1-686 
and the previous 2.6.32-trunk-686.
It has CONFIG_DRM_I915_KMS not set.

I have an intel laptop which has this card according to lspci:
Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02]
(rev 0c)

I am already happy without KMS but I suspect that it won't last.
(KMS will be enabled by default in the kernel at some point maybe?)
-- 
Tarek



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Bug#567563: Workarounds

2010-02-03 Thread Tarek Soliman
This is caused by the fix to bug #555906 (enable KMS in the module)

Here's 2 different workarounds:

1 - enable KMS in the kernel
This caused everything to be super slow

2 - delete or comment out /etc/modprobe.d/i915-kms.conf
This essentially disabled KMS from the module

Workaround #2 is what I am currently using and it is working well.
I cannot live with workaround #1 which seems like the real fix because of
the extreme slowness it introduces.
-- 
Tarek



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Bug#567563: Workarounds

2010-02-03 Thread Brice Goglin
Tarek Soliman wrote:
 This is caused by the fix to bug #555906 (enable KMS in the module)
   

No, this is caused by KMS, not by the fix.

 Here's 2 different workarounds:

 1 - enable KMS in the kernel
   

What do you mean ? Set I915_KMS in the kernel config ? It shouldn't make
any difference. Both enable KMS.

Brice




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