Is this an X bug?
tiago.vignatti at nokia.com
Tue Aug 3 09:25:27 PDT 2010
On Mon, Aug 02, 2010 at 07:45:54PM +0200, ext Adam Jackson wrote:
> On Mon, 2010-08-02 at 12:21 -0400, Bob Self wrote:
> > I'm running Ubuntu linux and am getting lockups. When it 'locks up' sometimes I can login via
> > ssh, sometimes everything is halted. When I can log in I always find that X is stuck at 100% cpu.
> > I have found this in /var/log/Xorg.0.log.old after rebooting via a ssh connection.
> > [mi] EQ overflowing. The server is probably stuck in an infinite loop.
> > Backtrace:
> > 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b]
> > 1: /usr/bin/X (mieqEnqueue+0x1ab) [0x80e8b6b]
> > 2: /usr/bin/X (xf86PostButtonEventP+0xcf) [0x80c29cf]
> > 3: /usr/bin/X (xf86PostButtonEvent+0x6c) [0x80c2a7c]
> > 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7d4000+0x4c67) [0x7d8c67]
> > 5: /usr/bin/X (0x8048000+0x6d5bf) [0x80b55bf]
> > 6: /usr/bin/X (0x8048000+0x122744) [0x816a744]
> > 7: (vdso) (__kernel_sigreturn+0x0) [0x149400]
> > Does anyone know what this means?
> You stopped the backtrace just before it got interesting. All we see
> there is the SIGIO signal handler being entered and calling into the
> input driver, which then tries to eat an event from the kernel and has
> no place to put it because the core server is stuck not processing input
> So whatever's going on in stack frame 8 is to blame.
In other words, it's very likely your driver messed your graphics device that
got stuck somewhere while the input signal handler keeps queueing input
events. So almost sure video driver issue.
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