Description of problem: Each time I start a new gnome session, the process "gnome-shell --mode=gdm" takes about 20% cpu. To stop it, I choose "switch user" from gnome menu and from the gdm panel I enter in my already opened session (same user of previous login). I get the same problem start a gnome session with all extensions disabled. Version-Release number of selected component (if applicable): gnome-shell-3.18.3-1.fc23.x86_64
On my hardware this amounts to more than 40% cpu :-( A downgrade to 3.18.1-1.fc23 doesn't help, but I can confirm the workaround.
FYI: found a much simpler workaround: switch VT to the one where gdm runs then back. I can't reproduce this bug with i686 on a netbook with Intel graphics, while different fc23.x86_64 installations on different computers equipped with NVIDIA graphics cards using the binary driver exhibit the issue. @adriano: Could you please specify which graphics driver you are using?
I get the problem too, with a NVIDIA graphic card (GTX 570) and the proprietary driver. @Ilja: I confirm your workaround works.
Can't reproduce with nouveau, this bug seems to be restricted to the NVIDIA binary driver.
(In reply to Ilja Sekler from comment #2) > FYI: found a much simpler workaround: switch VT to the one where gdm runs > then back. > > I can't reproduce this bug with i686 on a netbook with Intel graphics, while > different fc23.x86_64 installations on different computers equipped with > NVIDIA graphics cards using the binary driver exhibit the issue. > > @adriano: > > Could you please specify which graphics driver you are using? Yes, I'm using an NVIDIA graphic card. adriano ~ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [NVS 4200M] (rev a1) NVIDIA proprietary driver from "negativo17 - Nvidia" repo (http://negativo17.org/nvidia-driver/)
i'm building an update now that should address this.
(In reply to Ray Strode [halfline] from comment #6) > i'm building an update now that should address this. I apologize for bugspam, but I really want to thank you for the immediate backport of the necessary patches. I've grabbed the src.rpm from <http://koji.fedoraproject.org/koji/buildinfo?buildID=735393>, installed the resulting local build and can confirm that it fixes this issue.
gdm-3.18.2-2.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-6f8f961dc4
great, if you could put karma on the update, i'd appreciate it.
(In reply to Ray Strode [halfline] from comment #6) > i'm building an update now that should address this. What was the problem ?
gdm-3.18.2-2.fc23 has been pushed to the Fedora 23 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-2016-6f8f961dc4
(In reply to Sylvain Petreolle from comment #10) > (In reply to Ray Strode [halfline] from comment #6) > > i'm building an update now that should address this. > > What was the problem ? See the linked upstream report for details, but basically an invisible spinner animation had gone rogue.
gdm-3.18.2-2.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.