[Bug 106671] Frequent lock ups for AMD RX 550 graphics card

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106671

--- Comment #34 from Alan W. Irwin <Alan.W.Irwin1234 at gmail.com> ---
I have discovered this box became significantly less stable when there were two
users displaying X directly on it (one with startx , one with startx -- :1) and
using ctrl-alt-F1 and ctrl-alt-F2 to switch between the two local X servers
that were displaying two different XFCE desktops via the RX 550 graphics card.
After moving to that mode of operation we got the following results for uptimes
before lockups:

1 day,  2 times
2 days, 1 time
3 days, 1 time

For each of these 4 lockups I could not spot any relevant messages in the log
files.  But the substantially shorter uptimes for this method of using this box
does appear to confirm there are still issues with the graphics stack for the
RX550.  But the graphics content being displayed by the two users is roughly
similar so I don't understand why this mode of operation is so much less stable
then if just one user is using the RX 550 while the other is using an
X-terminal.  (None of these lockups occurred anywhere near the times we
switched between the two local X servers, but I suppose it is possible that
switching sets up a condition that results in a lockup much later.)

Anyhow, because of the increased instability I gave up on the two local X
servers approach and went back to the one local X server and one X-terminal
approach, and with that approach we got an uptime of a week before the system
locked up.  That lockup occurred tonight, and I have attached a tarball
containing log files that show many NMI error messages associated with that
lockup (but with no reference to the e1000e module this time).

@Michel Dänzer: Could you please take a look at these log files and let me know
if this is the best place to report the present lockup?

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