You have been subscribed to a public bug:

When I returned to my computer (AMD RX580 graphics, amdgpu) after a
while (the screen had entered power saving mode), the gnome-shell
process (on XWayland) failed.

Unfortunately this crash was not automatically reported by whoopsie /
apport and required manual re-submission (bug 1792643). If this was also
so for the other (to date only) three reporters, this would explain the
low number of reports on errors.ubuntu.com.


This is a dupe of bug 1837087 (I'm just filing this here to make some of this 
more searchable).

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.4-0ubuntu18.04.1
ProcVersionSignature: Ubuntu 5.0.0-20.21~18.04.1-generic 5.0.8
Uname: Linux 5.0.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
AssertionMessage: gnome-shell: 
../src/gallium/drivers/radeonsi/si_state_viewport.c:239: si_emit_guardband: 
Assertion `left <= -1 && top <= -1 && right >= 1 && bottom >= 1' failed.
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 18 11:24:17 2019
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: gnome-shell
StacktraceTop:
 __assert_fail_base (fmt=0x7f404287a7d8 "%s%s%s:%u: %s%sAssertion `%s' 
failed.\n%n", assertion=assertion@entry=0x7f401e48e0a0 "left <= -1 && top <= -1 
&& right >= 1 && bottom >= 1", file=file@entry=0x7f401e4a8550 
"../src/gallium/drivers/radeonsi/si_state_viewport.c", line=line@entry=239, 
function=function@entry=0x7f401e4a8660 "si_emit_guardband") at assert.c:92
 __GI___assert_fail (assertion=0x7f401e48e0a0 "left <= -1 && top <= -1 && right 
>= 1 && bottom >= 1", file=0x7f401e4a8550 
"../src/gallium/drivers/radeonsi/si_state_viewport.c", line=239, 
function=0x7f401e4a8660 "si_emit_guardband") at assert.c:101
 () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
 () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
 () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
Title: gnome-shell assert failure: gnome-shell: 
../src/gallium/drivers/radeonsi/si_state_viewport.c:239: si_emit_guardband: 
Assertion `left <= -1 && top <= -1 && right >= 1 && bottom >= 1' failed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip fax libvirt libvirtd lpadmin lxd plugdev sambashare 
sudo users vboxusers

** Affects: mesa (Ubuntu)
     Importance: Medium
         Status: New


** Tags: amd64 apport-crash bionic
-- 
gnome-shell assert failure: gnome-shell: 
../src/gallium/drivers/radeonsi/si_state_viewport.c:239: si_emit_guardband: 
Assertion `left <= -1 && top <= -1 && right >= 1 && bottom >= 1' failed.
https://bugs.launchpad.net/bugs/1837162
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