Description of problem:
The problem is triggered (sometimes) when I use an external (DisplayPort) KVM-switch.
The crash appears (I think) more frequently, if I switch when the display is on.
I have taken to locking the screen before I switch over, as this appears to reduce the problem frequency.
I experienced the crash (same symptoms, anyway) a few time with F28.
After upgrading to F29 it happens daily.
Version-Release number of selected component:
runlevel: N 5
0: /usr/bin/Xwayland (OsLookupColor+0x13d) [0x5598d52121ed]
1: /lib64/libpthread.so.0 (funlockfile+0x50) [0x7fdad26120bf]
2: /usr/bin/Xwayland (present_wnmd_event_notify+0x3e1) [0x5598d517a341]
3: /usr/bin/Xwayland (present_can_window_flip+0xb9e) [0x5598d517b87e]
4: /usr/bin/Xwayland (SendErrorToClient+0x35e) [0x5598d51dc21e]
5: /usr/bin/Xwayland (InitFonts+0x3c6) [0x5598d51e0246]
6: /lib64/libc.so.6 (__libc_start_main+0xf3) [0x7fdad245d413]
7: /usr/bin/Xwayland (_start+0x2e) [0x5598d50ae35e]
Created attachment 1511273 [details]
Created attachment 1511274 [details]
Created attachment 1511275 [details]
Created attachment 1511276 [details]
Created attachment 1511277 [details]
Created attachment 1511278 [details]
xorg-x11-server-1.20.3-2.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-e3ade0ccc7
xorg-x11-server-1.20.3-2.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.