[Intel-gfx] system freeze with kernel 3.2-rc7

[Ben Widawsky]

On 01/12/2012 02:57 PM, Kai Krakow wrote:
> Ben Widawsky<ben at bwidawsk.net>  schrieb:
>
>> On Mon, Dec 26, 2011 at 01:43:37AM +0100, Kai Krakow wrote:
>>> I found my system freeze mostly during starting up X and KDE. Sometimes
>>> it works for some minutes, sometimes it freezes immediatly. When the
>>> freeze happens, everything is dead (even the reset button does not work,
>>> I need to power cycle).
> [...]
>> Can you please try this kernel:
>> git://people.freedesktop.org/~bwidawsk/drm-intel context-support
>>
>> You probably need to manually enable rc6. We were given some hint that
>> we may not be setting up contexts properly. The above branch should
>> create a default context (amongst other stuff which won't happen in this
>> case).
>
> Since that branch seems to be based off 3.2-rc6 I didn't need to enable RC6,
> it was on by default.
>
> But I'm sorry to inform you that this still makes my system board freeze
> during KDE login, sometimes early, sometimes late during loading of the
> desktop.

Thanks. At least we can give this information back to our design team.

>
> My system freezes completely: Keyboard dead, SysRq shortcuts dead, screen
> goes blank (or shows funny lightshows before blanking), even the hard disk
> LED freezes. I need to power cycle to get back into a working state. If I
> only use the reset switch, the board behaves strange after reboot. The reset
> button sometimes takes a few seconds to make the system reboot when frozen.
>
> All this tells me that something really bad goes on within the
> CPU/GPU/chipset during freeze which even survives a board reset. Only power
> cycling helps.
>
> Keith got the specs of my system and wanted to "mirror" it for development.
> Maybe he could find out better what happens. I have no idea how to debug
> that because everything freezes so badly.
>
> Regards,
> Kai

Jesse, would you care to update VPG with this info?

Ben