[Bug 94250] Intel driver crashes when undocking Lenovo T450s

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94250

--- Comment #6 from cs_gon at yahoo.com ---
When using the first patch (comment 4), the code did not exit at the new
assertion, but at the one from before (from comment 3).

I think I saw it one time exiting with (but failed to save the log and core
dump):
(EE) sna_dri2_schedule_flip:3078 assertion 'info->front == front' failed

And the new patch (comment 5) unfortunately did not fix the problem. After a
couple of tries the code seems to exit at one of two assertions. I will add the
Xorg logs and corresponding stack traces. One of the assertions is
"'info->front == front' failed" from above, so I got the log and stack trace
for this one.

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