I'm willing to do some kernel debugging if necessary, including git bisects,
recompilation and minor modifications.
I'm not that good in kernel hacking, although I'll be able to help at least
partially.
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Chris,
Is it possible that there is some physical damage on the connector
inside the laptop that causes jitter, which in turn causes continuous
triggering of the corresponding APIC line?
Is there a way to verify it?
And do you know if I can manually switch the handling of this particular
hotplug
Xorg stack trace:
knazarov:~/ $ sudo cat /proc/`pidof X`/stack
[16:36:03]
[] intel_dp_aux_wait_done+0x16f/0x1a0 [i915]
[] intel_dp_aux_ch+0x30b/0x460
Attaching dmesg
** Attachment added: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1183089/+attachment/3684769/+files/dmesg
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attaching perfreport (note that I used perf for kernel 3.8, since there
is no perf for 3.10 in official repository)
** Attachment added: "perfreport.log"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1183089/+attachment/3684770/+files/perfreport.log
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You received
Installed kernel 3.10:
knazarov:~/ $ uname -a
[15:54:12]
Linux kn 3.10.0-994-generic #201305230446 SMP Thu May 23 08:47:34 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
The lockup sti
Chris,
Is there anything else I can do to verify that this is really an hotplug
irq storm?
Maybe some debugging information or additional logs will help?
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Public bug reported:
Xorg hangs on macbook air mid 2012 when the external thunderbolt display is
being unplugged.
Also, when I try to boot without the external display, the OS hangs immediately
on the kernel boot splash.
If I then plug the display in again, the OS unfreezes and continues to
ru
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