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maybe, like in my case, the external monitor is being used as an extension of your built-in LCD display? so it appears blank.
my Cinnamon crashes after i login but thankfully it restarts fine. never checked further as i switched to KDE Plasma due to some other reasons. From: Stefan Hübner via users <users@xxxxxxxxxxxxxxxxxxxxxxx>
Sent: Friday, May 4, 2018 1:49 PM To: users@xxxxxxxxxxxxxxxxxxxxxxx Cc: Stefan Hübner Subject: F28: gnome-shell crashes when using external displays 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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