http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c1 Stefan Dirsch changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lpechacek@suse.com Flags| |needinfo?(lpechacek@suse.co | |m) --- Comment #1 from Stefan Dirsch --- Hmm. Is this also reproducable on an Xsession? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c5 Libor Pechacek changed: What |Removed |Added ---------------------------------------------------------------------------- Flags|needinfo?(lpechacek@suse.co | |m) | --- Comment #5 from Libor Pechacek --- (In reply to Stefan Dirsch from comment #3)

In gdm you can select GNOME sessions running on Xorg or just a windowmanager, which does not support Wayland (like icewm, xfce).

Took some time to find the switch but I succeeded in starting an Xorg based session. I've been using it for the whole day today without a single repetition. There are also no libinput error messages in system log. If you have more debugging suggestions, I'l be happy to perform the data collection. (In reply to Michal Srb from comment #4)

I am trying to reproduce it on my laptop with Tumbleweed - so far it happened to me only once. It was in gnome-shell (wayland) and it happened inside xterm, so X application tunneling thru Xwayland.

Thanks, Michal, for looking into it. On my side the issue appears in waves. Mostly there are no problems and only occasionally the system becomes sluggish and the key repeat trouble triggers. Looks like something is running in background but I haven't yet investigated.

The applications you named - VirtualBox, Chromium, GNOME Terminal and GVim - I think they all use Xwayland except for GNOME Terminal, which should use wayland directly.

It is possible that also VirtualBox is using Wayland directly as it is Qt based and has the plugin built in. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c6 Neil Rickert changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CONFIRMED CC| |nwr10cst-oslnx@yahoo.com --- Comment #6 from Neil Rickert --- I can confirm this problem. I have been noticing it for some time, though I never thought of reporting it as a bug. I mainly use KDE, and I don't think I have ever seen it happen there even with Plasma Wayland, though I suppose I should recheck. When I use Gnome, I always see this happen. I have only seen it once per session, at perhaps 2-5 minutes into the session. When using Gnome, I normally use Wayland. I don't recall whether I have see it with Xorg. When I have seen the problem, it has always been in an "xterm" which is my preferred terminal emulator. I do have an "xterm" starting as an automatic startup program when I login. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c7 --- Comment #7 from Victor Zhestkov --- *** Bug 1119495 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c9 --- Comment #9 from Victor Zhestkov --- The issue appeared on change gnome-shell version from 3.28 to 3.30, probably. But maybe it's related to different package changed about 2 month ago. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Victor Zhestkov changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|Normal |Major -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c12 --- Comment #12 from Victor Zhestkov --- I found old copy of Tumbleweed repo - 20181015, the newest one with GNOME 3.28 I found. And it seems different with this behavior. There are messages in the journal like this: Dec 26 16:08:53 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client bug: timer event21 debounce: offset negative (-7ms) Dec 26 16:10:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client bug: timer event21 debounce: offset negative (-6ms) Dec 26 16:10:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client bug: timer event21 debounce short: offset negative (-19ms) Dec 26 16:11:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client bug: timer event21 debounce: offset negative (-7ms) Dec 26 16:11:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client bug: timer event21 debounce short: offset negative (-20ms) But there are no repeating keys in the interface and it seems more responsive. I didn't find the copy of the repo close to the time period the issue probably appeared. It's probably 20181022 or a couple of days prior. I suppose it's related to gnome-shell or mutter. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Michiel Janssens changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |michiel@nexigon.net -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Stefan Dirsch changed: What |Removed |Added ---------------------------------------------------------------------------- CC|sndirsch@suse.com | -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Nicolas Patricio Saenz Julienne changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |nsaenzjulienne@suse.com -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c13 Atri Bhattacharya changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |badshah400@gmail.com --- Comment #13 from Atri Bhattacharya --- Can someone try booting the system with the kernel parameter "spectre_v2=off" and see if that helps at all? It helps mitigate this same problem on my system (as does disabling hyperthreading entirely from BIOS settings, if that is an option). -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c14 Atri Bhattacharya changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Wayland: briefffffffffff |Wayland: brief |unresponsivvvvvvvvvvvveness |unresponsiveness and |and repeated keys |repeated keys --- Comment #14 from Atri Bhattacharya --- Updating summary so that it shows up in search -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c16 --- Comment #16 from Victor Zhestkov --- The patch seems just slightly changes the issue. It's still exists, but probably the time of the lag less than with no patch. Under XOrg it's almost insensible. Now I'm trying with kernel parameters turning vulnerability mitigations off, as Atri proposed. Not sure yet, I need some more time for testing. But the messages about negative offset still in the journal. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Bruce Rogers changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |brogers@suse.com -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c22 --- Comment #22 from Victor Zhestkov --- Created attachment 795143 --> http://bugzilla.opensuse.org/attachment.cgi?id=795143&action=edit dmesg output -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c27 --- Comment #27 from Victor Zhestkov --- Bugzilla not allowing me to attach the file. It returns that file was not specified. Here is the link to google drive: https://drive.google.com/file/d/13W1UUdSl3eelLgnQ30XH0cB-bcCh4dD9/view?usp=s... -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c30 --- Comment #30 from Victor Zhestkov --- Boris, thanks. I see. But if I run XOrg and other WM than GNOME, there is no such issue. I suppose it's not the only issue related to the vulnerability mitigation, but GNOME also has some issue or issues. Not sure but it could be gnome-shell or gjs or both. Sometimes there is rather high CPU utilization by gnome-shell and some messages related to gjs. Probably the issue in GNOME become more noticeable with vulnerability mitigation issue in the kernel. And what is the current recommendation about this issue? Avoid using HT and set spectre_v2=retpoline, right? I've already tried to turn off all mitigations before, but didn't turn off HT at that time and as I remember the issue was noticeable on such attempt. And the other question about vulnerabilities mitigation. What is the best benchmark to check the difference in performance with different kernel options? I've seen some benchmarks, but not sure if it was a good idea just to measure the time of context switches as one of the tests do. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 http://bugzilla.opensuse.org/show_bug.cgi?id=1117833#c35 --- Comment #35 from Libor Pechacek --- (In reply to Jiri Kosina from comment #19)

This might be related to bug#1112824

Having read the mentioned bug, I confirm that bug 1112824, comment 103 (last paragraph) and bug 1112824, comment 115 do describe behavior I'm seeing. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Tomasz Witowski changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tomasz.witowski@outlook.com -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1117833 Roscoe Brooks changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |roscoe@roscoebrooks.com -- You are receiving this mail because: You are on the CC list for the bug.