[Bug 1885330] Re: System unresponsive to keyboard and mouse clicks when changing screen background
Additional info... Upon invoking the freeze, Ctl-Alt-F3 sometimes brings up a terminal session on tty3. If it does, Ctl-Alt-F2 will switch back to GNOME which will remain frozen for a while, but will allow switching back and forth with the Ctl-Alt-F# keys. Running "top" on tty3 shows no processes taking much %CPU. Observed a message "[TTM] Buffer eviction failed" 3 times (on tty3) while waiting for unfreeze. Sometimes, Ctl-Alt-F3 is also unresponsive upon freeze, but did eventually switch to tty3 (after a about 20 seconds). This hasn't been tested much yet. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1885330 Title: System unresponsive to keyboard and mouse clicks when changing screen background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1885330] Re: System unresponsive to keyboard and mouse clicks when changing screen background
Here is the journalctl report. Line 3144 is immediately prior to hanging GNOME. ** Attachment added: "post-freeze.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+attachment/5388456/+files/post-freeze.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1885330 Title: System unresponsive to keyboard and mouse clicks when changing screen background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1885330] Re: System unresponsive to keyboard and mouse clicks when changing screen background
"pidof gnome-shell" reports the same PID before and after. On Mon, Jun 29, 2020 at 10:35 PM Daniel van Vugt <1885...@bugs.launchpad.net> wrote: > If the mouse cursor still moves then that means Xorg is still running > and it was gnome-shell frozen. But we need to find out if it was just > frozen or the result of a crash. Please use this command: > > pidof gnome-shell > > to check the process ID before and after the freeze and tell us if it > changes. > > Also immediately after the next freeze please run: > > journalctl -b0 > post-freeze.txt > > and attach the resulting text file here. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1885330 > > Title: > System unresponsive to keyboard and mouse clicks when changing screen > background > > Status in gnome-shell package in Ubuntu: > Incomplete > > Bug description: > Right click on screen background and choose settings. > Then click a different background. > System becomes unresponsive to keyboard input and mouse clicks. > System returns to responsiveness after about 10 minutes. > > Description: Ubuntu 20.04 LTS > Release: 20.04 > > CPU: 8-Core AMD Ryzen 7 1700 (-MT MCP-) speed: 2562 MHz > Kernel: 5.4.0-37-generic x86_64 Up: 48m Mem: 2370.8/32114.5 MiB (7.4%) > Storage: 1.82 TiB (5.5% used) Procs: 337 Shell: bash 5.0.16 inxi: 3.0.38 > > Expected behavior: > Changing the background happens immediately and system remains > responsive to input. > > What happened: > System did not change the background immediately and became unresponsive > to keyboard and mouse input for 10 minutes at which point the background > changed to the selected one and responsiveness returned. > > ProblemType: Bug > DistroRelease: Ubuntu 20.04 > Package: gnome-control-center 1:3.36.2-0ubuntu1 > ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41 > Uname: Linux 5.4.0-37-generic x86_64 > ApportVersion: 2.20.11-0ubuntu27.3 > Architecture: amd64 > CasperMD5CheckResult: skip > CurrentDesktop: ubuntu:GNOME > Date: Fri Jun 26 15:50:44 2020 > ExecutablePath: /usr/bin/gnome-control-center > InstallationDate: Installed on 2020-06-13 (13 days ago) > InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 > (20200423) > ProcEnviron: >PATH=(custom, no user) >XDG_RUNTIME_DIR= >LANG=en_US.UTF-8 >SHELL=/bin/bash > SourcePackage: gnome-control-center > UpgradeStatus: No upgrade log present (probably fresh install) > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1885330 Title: System unresponsive to keyboard and mouse clicks when changing screen background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1885330] Re: System unresponsive to keyboard and mouse clicks when changing screen background
In response to the last comment...
1. Run this command:
gsettings list-recursively org.gnome.shell > settings.txt
and attach the resulting text file here.
See attached
2. Open a Terminal window and run 'top'. Now reproduce the problem
again. While the problem is happening does 'top' report any process
using very high CPU?
All windows freeze. Only the cursor moves. "top" frozen.
3. Follow these instructions to check for crashes:
https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment
/var/crash is empty
/var/lib/whoopsie/whoopsie-id ... https://errors.ubuntu.com/user/ID reports
that "No errors have been reported from this system"
Applied work around for bug 994921 and got same results (no crash)
### Additional Information ###
1. In addition to becoming un-responsive, window also freeze ("top" stops
reporting while hung, Graphic applications like performance monitor also
hang/freeze).
2. The "Settings" app shows a preview, when launched, it shows the current
desktop. When selecting a different background, sometimes the preview will
update (but freezes before updating the desktop), and sometimes the preview
will not update.
3. After reboot, timing the hang, it takes about 16 minutes to become
responsive again. However, a second settings change took as little as 90
seconds. Not enough evaluation has been done to determine if other factors are
contributing to the timings (during the 90 second timing, I had tcpdump running
and I pinged the machine from another machine during the hang).
4. After reboot, running tcpdump during the hang, viewing with wireshark after
responsiveness returns, I find that there is some normal looking network
traffice, including connectivity checks outbound and normal responses received.
###
** Attachment added: "settings.txt"
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+attachment/5388157/+files/settings.txt
--
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https://bugs.launchpad.net/bugs/1885330
Title:
System unresponsive to keyboard and mouse clicks when changing screen
background
To manage notifications about this bug go to:
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[Bug 1885330] [NEW] System unresponsive to keyboard and mouse clicks when changing screen background
Public bug reported: Right click on screen background and choose settings. Then click a different background. System becomes unresponsive to keyboard input and mouse clicks. System returns to responsiveness after about 10 minutes. Description:Ubuntu 20.04 LTS Release:20.04 CPU: 8-Core AMD Ryzen 7 1700 (-MT MCP-) speed: 2562 MHz Kernel: 5.4.0-37-generic x86_64 Up: 48m Mem: 2370.8/32114.5 MiB (7.4%) Storage: 1.82 TiB (5.5% used) Procs: 337 Shell: bash 5.0.16 inxi: 3.0.38 Expected behavior: Changing the background happens immediately and system remains responsive to input. What happened: System did not change the background immediately and became unresponsive to keyboard and mouse input for 10 minutes at which point the background changed to the selected one and responsiveness returned. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-control-center 1:3.36.2-0ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41 Uname: Linux 5.4.0-37-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Jun 26 15:50:44 2020 ExecutablePath: /usr/bin/gnome-control-center InstallationDate: Installed on 2020-06-13 (13 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-control-center (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1885330 Title: System unresponsive to keyboard and mouse clicks when changing screen background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1885330/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
