X hangs with blank screen on 2.6.32-rc4 / Intel 915GM

X hangs with blank screen on 2.6.32-rc4 / Intel 915GM

[Jonathan McDowell]

Hi.

Trying 2.6.32-rc4 on my Toshiba R200 laptop running Debian Squeeze leads
to a blank screen with a flashing cursor in the top left when X starts.
If startup in such a way that X isn't automatically started the console
is fine, but starting X manually still leads to the hang. The machine
seems unresponsive at this point - I can't switch to a normal console
and the laptop fan comes on in a manner that suggests the CPU is
chugging away.

2.6.31.4 works fine.

X versions are as per up-to-date Squeeze - Xorg 7.4 with Intel 2.9.0.

I tried without VGA_ARB as that seemed to be the largest related change
that might affect X but not the console, but it didn't make a
difference.

dmesg from non X boot, Kernel config and lspci -vv output at:

http://the.earth.li/~noodles/i915-32-rc-x-broken/

I don't really have time at present to get involved in a full bisect,
but I can potentially try over the weekend if there's nothing more
obvious to try first.

J.

-- 
"The actual chances of it blowing are about one in...one." - Lister

Re: X hangs with blank screen on 2.6.32-rc4 / Intel 915GM

[Jonathan McDowell]

On Thu, Oct 15, 2009 at 05:53:19PM -0700, Jonathan McDowell wrote:
> Trying 2.6.32-rc4 on my Toshiba R200 laptop running Debian Squeeze
> leads to a blank screen with a flashing cursor in the top left when X
> starts.  If startup in such a way that X isn't automatically started
> the console is fine, but starting X manually still leads to the hang.
> The machine seems unresponsive at this point - I can't switch to a
> normal console and the laptop fan comes on in a manner that suggests
> the CPU is chugging away.
> 
> 2.6.31.4 works fine.

And 2.6.32-rc5 works again, so this is no longer an issue as far as
I'm concerned.

J.

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