Comment 85 for bug 36596

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Bryce Harrington (bryce) wrote : Re: [Mobility M6 LY] System freeze with DefaultDepth 16

Hi ed-ong,

Thanks for testing that, it rules out a common cause of these problems. Sorry to have you keep testing stuff over and over. :-) I think this bug should have gone upstream long ago. I'd like to do so now, but the first thing is that they will wish you to re-test against a newer version of the -ati driver.

I've uploaded the latest 6.11.0 driver to Jaunty the other day. When Alpha-5 comes out in a couple days, I would like to ask that you download and re-test it one more time. If you can reproduce the problem then we should forward it upstream.

ISOs are available at http://cdimages.ubuntu.com/releases/jaunty/

I dug into the changelog and see that there has been a fix to your chipset since the 6.9.0 release:

Date: Fri Aug 8 15:50:07 2008 -0400

    Fix VT switching on M6 chips

    Some M6 chips have a faulty MEM_SIZE register that in
    some cases reports 0 on 8 MB cards. On EnterVT we check
    the MEM_SIZE reg as a check to see if the card is posted or
    not. Since this reg returns 0, the driver attempts to post
    the card which can lead to a hang. Switch this to check if
    either crtc is active as is done in the bios init code.
    fixes bug http://bugs.freedesktop.org/show_bug.cgi?id=13994

However, the symptoms of this bug differ from what is reported here so I'm not entirely sure this fix would solve this freeze issue. But I think it would be helpful if you could re-test jaunty before we upstream the bug.

In addition, can you run the command `lspci -vvnn > lspci-vvnn.txt` and attach that output here?