Comment 192 for bug 541511

Revision history for this message
Filippo neri (fneri23) wrote :

My situation:
System: Thinkpad X40 Intel(R) Pentium(R) M processor 1.40GHz
Memory: 1.5 GiB, Intel 855GM Chipset
Ubuntu Release 10.04(lucid) installed from the beta2 CD and updated to the latest packages
(including lucid-proposed and lucid-backports.)
I have installed the following kernels:
2.6.32-19-generic
2.6.32-21-generic
2.6.32-22-generic
2.6.34-020634rc5-generic
(I upgraded to 2.6.32-22-generic today. )
Results (VERY repeatable!)
2.6.32-19-generic → OK
2.6.32-21-generic → Black screen
2.6.32-22-generic → Black screen
2.6.34-020634rc5-generic → OK
By OK I mean everything seems to work fine, and I can use the “Normal” Visual Effects setting.

filippo@X40:~$ uname -a

Linux X40 2.6.34-020634rc5-generic #020634rc5 SMP Tue Apr 20 10:07:04 UTC 2010 i686 GNU/Linux

filippo@X40:~$ dmesg | grep agp

[ 2.827117] Linux agpgart interface v0.103

[ 2.946581] agpgart-intel 0000:00:00.0: Intel 855GM Chipset

[ 2.947454] agpgart-intel 0000:00:00.0: detected 8060K stolen memory

[ 2.969120] agpgart-intel 0000:00:00.0: AGP aperture is 128M @ 0xe0000000

As far as I am concerned, this is a kernel bug introduced between 2.6.32-19 and 2.6.32-21,
but unfortunately, still present in 2.6.32-22. I have the choice of using 2.6.32-19, but I
will use 2.6.34-020634rc5 for the next few weeks to see if any problem arises.