[M6][Needs AGPMode quirk] laptop freezes when connecting power supply

I have similar symptoms as in bug 144297. It also fixes the problem if I put option "DRI" "off" to the Device section of /etc/X11/xorg.conf.

Everything was working fine with Hardy alpha, but after latest updates this issue appeared again.

It seems that cpu frequency scaling with dri enabled is making computer freeze. If I remove powernowd then computer works fine with dri enabled.

Thanks for your report. Is this still a problem in Ubuntu 8.04.1 or in Intrepid?

I still have this problem with Ubuntu Intrepid Alpha 3 32 bit. Machine hangs before entering desktop if power supply is connected.

This sounds a lot like a kernel issue; I'll add them to take a look.

Just testing Jaunty 9.04 alpha-2 with my Omnibook 6200. Problem still exists, but I can make DRI and Powernowd work together by using p4-clockmode as advised in bug #80459. Should this be enabled by default for Pentium-4 laptops? This same hack works in Intrepid also.
I have installed latest Ubuntu releases with battery power only, and then make Powernowd use p4-clockmode, so I can use this computer with power supply also.

Okay, I'm fairly sure this is a kernel issue rather than -ati so am going to close this task.

Hi Rami,

Ater you notice the freeze would you be able to ssh into the machine to try and capture any dmesg output? I'm curious if you experience any sort of kernel panic or oops that may be helpful to see.

I am unable to ssh to machine when it is freezed. I don't see anything intresting in logs after freeze and reboot. Latest updates seems to change kernel power save features and my fix does not work anymore. This machine does not freeze with Mandriva 2009, but I think Mandriva does not use Powernowd. Maybe this bug is related to this https://bugs.launchpad.net/ubuntu/+source/powernowd/+bug/48792.
Currently I am using Debian Lenny on this machine. Debian also suffers from this bug, but only if I boot with power supply connected.

Installed Jaunty to Omnibook vt6200. With default settings machine freezes when connecting or disconnecting power supply. I browsed some bug reports with this error and noticed this:
http://webui.sourcelabs.com/kernel/issues/2754

I then added to xorg.conf, devices section: Option "AGPMode" "1" . After this everything seems to be working. There seems to be problems with this laptop chipset.

In that case, we can at least work around it in the -ati driver by setting the needed AGPMode.

Can you please provide the information needed, as outlined on https://wiki.ubuntu.com/X/Quirks#ATI%20AGP%20Mode%20Quirk ?

Never mind, it was all in the log:
(II) PCI: 00:00:0: chip 10b9,1671 card 103c,0027 rev 02 class 06,00,00 hdr 00
(II) PCI: 01:00:0: chip 1002,4c59 card 103c,0027 rev 00 class 03,00,00 hdr 00

This bug was fixed in the package xserver-xorg-video-ati - 1:6.12.99+git20090629.f39cafc5-0ubuntu2

---------------
xserver-xorg-video-ati (1:6.12.99+git20090629.f39cafc5-0ubuntu2) karmic; urgency=low

  * Add 108_quirk_agpmode_m6_ali.patch: AGPMode quirk. Fixes freeze when
    connecting powersupply on an HP Omnibook 6200 with ALi northbridge and
    an ATI M6 LY.
    (LP: #146303)

 -- Bryce Harrington <email address hidden> Fri, 31 Jul 2009 17:47:08 -0700

Closing linux (Ubuntu) kernel task.