[Bug 106422] i915 intel_tv_detect time out with recent kernels: [drm_kms_helper] flip_done timed out

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106422

--- Comment #15 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Zakhar from comment #14)
> We have used this PC connected to a TV, but that was with a VGA cable,
> through the VGA-out socket, the TV having a VGA-In connetor. I am not sure
> whether that counts as "TV-Out" and is one of the tests I need to do for
> this workaround.

This is not about VGA (regardless of whether it's connected to a TV), this is
about SVIDEO. It's also possible your board doesn't even have a TV-out, which
causes the timeout.

Come to think of it, please attach /sys/kernel/debug/dri/0/i915_vbt.

> As for bisecting... do you have a pointer on documentation I could use to
> see the complexity of that? Sure the time-out appear somewhere between
> kernels 4.4 and 4.8, and that could be lower/upper bisection limits. Not
> sure though it is really practical starting bisecting with a remote
> machine!..

https://wiki.ubuntu.com/Kernel/KernelBisection

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20180523/8fa7560b/attachment.html>