Hi,
I upgraded to Fedora 28 two days ago (May 2nd). My laptop usually is
mounted to a docking station with two Dell displays attached.
Since this morning I cannot start a gnome session anymore. After login the
shell crashes gets back to GDM. In fact it's enough to hover over the top
right drop down menu to crash GDM.
Also interesting: no fonts are displayed when using external monitors.
If I restart the machine without external monitors, everything works
flawlessly.
journalctl reveals the following messages (there's also a core dump, which
I omit for brevity):
Mai 04 11:00:15 4delsthubner02 gnome-shell[2601]: Failed to allocate
texture: Failed to create texture 2d due to size/format constraints
Mai 04 11:00:15 4delsthubner02 kernel: gnome-shell[2601]: segfault at 20001
ip 00007f4361c30002 sp 00007ffd812313e0 error 4 in
libglib-2.0.so.0.5600.1[7f4361bc6000+115000]
Mai 04 11:00:15 4delsthubner02 audit[2601]: ANOM_ABEND auid=4294967295
uid=42 gid=42 ses=4294967295 subj=system_u:system_r:xdm_t:s0-s0:c0.c1023
pid=2601 comm="gnome-shell" exe="/usr/bin/gnome-shell" sig=11 res=1
Mai 04 11:00:15 4delsthubner02 gnome-shell[2601]: cogl_object_ref:
assertion 'object != ((void *)0)' failed
Mai 04 11:00:15 4delsthubner02 gnome-shell[2601]:
clutter_texture_set_cogl_texture: assertion 'cogl_is_texture (cogl_tex)'
failed
Mai 04 11:00:15 4delsthubner02 gnome-shell[2601]: CoglError set over the
top of a previous CoglError or uninitialized memory.
This indicates a bug in
someone's code. You must ensure an error is NULL before it's set.
The overwriting error
message was: Sliced texture size of 16 x 16 not possible with max waste set
to -1
Mai 04 11:00:15 4delsthubner02 systemd[1]: Started Process Core Dump (PID
3049/UID 0).
What's going on here?
Best,
Stefan Hübner
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