[Bug 1852001] Re: KDE GUI freeze on high disk IO
@ccheney Do you have any new information on this bug? Did your trick with drop_caches work eventually? I'm experiencing the same issue for quite some time with both KDE and Gnome (to support the fact that it's DE agnostic) and it definitely seems to occur at times when system starts caching. The GUI becomes completely unresponsive (including the mouse pointer) and the io indicator on laptop blinks violently. Each time this happens I make sure to check and confirm that the amount of swapped data is significant enough (from half a gigabyte to couple of gigabytes) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
@ccheney Regardless if my crashes are gone, my experience is that having a swap file in recent Linux is deadly. If Linux starts swapping only a little then it's hardly usable any more. I believe this is because of the algorithm that decides which pages to remove from memory. Your observation with 50% RAM could be related to VMLIM. VMLIM says how much of the RAM may be used for programs. By default this is half your RAM. The other half is for cache and buff only. (as I understood, this may be inaccurate). Try other values for VMLIM. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
@ccheney better open a new bug because this one accumulates too much info from unrelated problems -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
The last time I got it to hang long enough to produce a backtrace it showed: [1560556.660010] INFO: task vgs:3103183 blocked for more than 1105 seconds. [1560556.660012] Tainted: G U OE 5.4.0-40-lowlatency #44-Ubuntu [1560556.660013] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [1560556.660014] vgs D0 3103183 411358 0x80004004 [1560556.660016] Call Trace: [1560556.660021] __schedule+0x2e5/0x750 [1560556.660023] schedule+0x49/0xd0 [1560556.660024] schedule_timeout+0x21a/0x300 [1560556.660027] ? call_rcu+0x10/0x20 [1560556.660030] ? __percpu_ref_switch_mode+0xec/0x1b0 [1560556.660031] wait_for_completion+0xa3/0x100 [1560556.660033] ? wake_up_q+0x70/0x70 [1560556.660036] exit_aio+0xe7/0xf0 [1560556.660038] mmput+0x22/0x120 [1560556.660039] do_exit+0x2f8/0xae0 [1560556.660041] ? finish_task_switch+0x75/0x250 [1560556.660042] do_group_exit+0x43/0xa0 [1560556.660044] get_signal+0x13e/0x8f0 [1560556.660046] ? hrtimer_cancel+0x15/0x20 [1560556.660047] ? read_events+0x14f/0x160 [1560556.660049] do_signal+0x34/0x6e0 [1560556.660050] ? hrtimer_init_sleeper+0xb0/0xb0 [1560556.660052] ? do_io_getevents+0x7a/0xf0 [1560556.660054] exit_to_usermode_loop+0xbf/0x160 [1560556.660055] do_syscall_64+0x163/0x190 [1560556.660057] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [1560556.660058] RIP: 0033:0x7f3b1269a70d [1560556.660062] Code: Bad RIP value. [1560556.660062] RSP: 002b:7fffd99f2f08 EFLAGS: 0246 ORIG_RAX: 00d0 [1560556.660064] RAX: fffc RBX: 7f3b1228e6c0 RCX: 7f3b1269a70d [1560556.660064] RDX: 0040 RSI: 0001 RDI: 7f3b12a7e000 [1560556.660065] RBP: 7f3b12a7e000 R08: R09: 00020016 [1560556.660065] R10: 7fffd99f2f90 R11: 0246 R12: 0001 [1560556.660066] R13: 0002 R14: 0040 R15: 7fffd99f2f90 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Actually looking at the patch (shrink_dcache_for_umount) this might not be the whole problem but may be just related. The problem I am having is while the system is still running, and cache growing huge, not while umounting. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
It appears Red Hat fixed this problem with a kernel patch in RHEL 7.5 that was not upstreamed. https://access.redhat.com/errata/RHSA-2018:1062 BZ - 1471875 - soft lockups during unmount when dentry cache is very large https://bugzilla.redhat.com/show_bug.cgi?id=1471875 ** Bug watch added: Red Hat Bugzilla #1471875 https://bugzilla.redhat.com/show_bug.cgi?id=1471875 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
I haven't verified if this actually fixes the problem but it seems to make a huge difference in 'free' memory as shown by 'free'. I had already closed my VMs by the time I tried this so haven't verified if it stops the long freezes yet. totalusedfree shared buff/cache available Mem: 31030533127905347 22907 19900 Swap: 327673130 29637 echo 3 > /proc/sys/vm/drop_caches totalusedfree shared buff/cache available Mem: 310305349 1712253128557 19915 Swap: 327673130 29637 Notice the 2790 -> 17122 change above in 'free', and 22907 -> 8557 for buff/cache. It appears the kernel doesn't get rid of cache in a reasonable timeframe at the expense of swapping programs out to disk while i/o is happening, which causes gui freezes. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
I have this problem as well on Cinnamon, so it doesn't appear to be specific to KDE. It stalls often and frequently over 15-30 seconds at a time for no apparent reason. But the swapping to disk may be a clue. I see this on 5.4.0-40 and have also tried with the lowlatency version of the kernel and it doesn't help. One thing that seems to reduce the frequency of the problem somewhat is to disable transparent_hugepage support but it still happens even after that. I have 32GB ram and it starts happening when I get to about 50% ram (mem available) usage. The system also appears to start swapping at that point despite what swappiness is set to. I tried setting it to 10 but it is still swapping at what appears to be ~ 50% usage. It appears to be very easy to reproduce if you run a few VMware VMs on a system. # cat /proc/sys/vm/swappiness 10 $ free -m totalusedfree shared buff/cache available Mem: 310306591 2469050 24192 14936 Swap: 327674942 27825 $ cat /proc/meminfo MemTotal: 31774792 kB MemFree: 256768 kB MemAvailable: 15324804 kB Buffers: 5887324 kB Cached: 16712984 kB SwapCached: 488276 kB Active: 19816476 kB Inactive:8835508 kB Active(anon): 12801324 kB Inactive(anon): 2522936 kB Active(file):7015152 kB Inactive(file): 6312572 kB Unevictable: 145612 kB Mlocked: 48 kB SwapTotal: 33554428 kB SwapFree: 28493052 kB Dirty: 2301336 kB Writeback: 9564 kB AnonPages: 6161528 kB Mapped: 7931416 kB Shmem: 9272240 kB KReclaimable:2201904 kB Slab:2451272 kB SReclaimable:2201904 kB SUnreclaim: 249368 kB KernelStack: 21552 kB PageTables:85272 kB NFS_Unstable: 0 kB Bounce:0 kB WritebackTmp: 0 kB CommitLimit:49441824 kB Committed_AS: 30098296 kB VmallocTotal: 34359738367 kB VmallocUsed: 55400 kB VmallocChunk: 0 kB Percpu: 7712 kB HardwareCorrupted: 0 kB AnonHugePages: 0 kB ShmemHugePages:0 kB ShmemPmdMapped:0 kB FileHugePages: 0 kB FilePmdMapped: 0 kB CmaTotal: 0 kB CmaFree: 0 kB HugePages_Total: 0 HugePages_Free:0 HugePages_Rsvd:0 HugePages_Surp:0 Hugepagesize: 2048 kB Hugetlb: 0 kB DirectMap4k: 5078656 kB DirectMap2M:27346944 kB DirectMap1G: 0 kB ** Changed in: linux (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Probably fucked up installation was the cause of this. sorry for bothering. I recently reinstalled Kubuntu because I was frustrated with the stability of my system. It still hadn't really improved since switch to kernel 5.4 And, magically, all the crashes are gone. So, no idea why but something in my old system seems to have caused most of the crashes. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
** Changed in: linux (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
I have a feeling based on experience with multiple machines running gnome-shell that this issue was specific to kernel 5.3 and has gone away in 5.4 and later. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Hi, I had the same problem, on high disk IO (SSD) including swap. I have install this version of kernel and the problems is gone for the moment. https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel- next/2020-02-26/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Still this bugs haunts me every day. kernel 5.3.0-29-generic still affected. whenever swap is enabled, the system is almost unusable when cache grows too large with time. as already told, this is by far worse than the infamous linux swap trashing. while this can be worked around easily, I am still logged out without any warning randomly about every day, killing all active programs. This seems a bit more likely when I have Windows Virtualboxes running, that have more than one processor core assigned. I already updated VB-Client, VB-Settings... my assumption: this is some threading issue. maybe wrong priority of some graphics stuff, maybe too many semaphores in swap-in code... I don't know. This problem annoys me for almost a year now. I give up. My last try is making Virtualbox work with the testing kernels. If this doesn't work I will try some other distribution. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
I think more likely it was a kernel bug and we just haven't bisected it clearly yet. Try going back to a v5.3 kernel like Ubuntu is shipping and see if it happens there? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Haven't had a problem for over a week now with kernel 5.4.1-050401-generic. Strange, as a comment above says it happened with this kernel as well. So it probably was fixed by the Firefox update? updates since Dec 8th contain: - Firefox from 69.0.3 to 71.0 - Thunderbird - samba, git, wine, ssh, makemkv -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
Incomplete, pending investigation per comment #18. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO
** Summary changed: - KDE GUI freeze on high disk IO, but disabling swap fixes it + KDE GUI freeze on high disk IO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
sorry... I think the only kernel yet that did not suffer was https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/ 5.4.0-997_5.4.0-997 will try 5.5-rc1 [1] is not totally equal, but may be related. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
There is for sure a bug. As I said, I know how a system behaves that is suffering from too much swapping. My case is far worse. and still, about once a day the GUI is completely locked. this cannot be explained from swapping and cannot be solved by disabling swap. I think the only kernel yet that did not suffer was -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
According to the description there's no swap in the end, so I think it's like discussion in [1]. So yes, I think it's still a kernel bug. For desktop usage, [2] [3] are mentioned by dsd in the discussion. Maybe we can adopt those daemon as an OOM killer for desktops. [1] https://lkml.org/lkml/2019/8/4/15 [2] https://github.com/endlessm/eos-boot-helper/blob/master/psi-monitor/psi-monitor.c [3] https://gitlab.freedesktop.org/hadess/low-memory-monitor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
I'm not really sure this is a bug. It sounds like expected behaviour: 1. Disk gets thrashed. 2. Any processes relying on memory swapping to/from that disk get delayed. No particular process is doing anything wrong. Just if you want to avoid that situation then maybe don't configure swap on such a disk. Then if you can survive without swap, problem solved. If you still need swapping for other reasons then either do so on a different disk or add more RAM, or run fewer programs. I don't think there's any bug here(?) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc1/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
Thanks. This looks like the cause of high disk IO at least: jan 3400 0.0 0.0 2600 676 pts/8SDez07 0:00 /bin/sh /usr/bin/bcompare RAID/Incoming/NAS-DATEN/ jan/NAS-DATEN/ jan 3412 70.7 11.3 2759972 1851804 pts/8 Sl Dez07 900:13 /usr/bin/bcompare RAID/Incoming/NAS-DATEN/ jan/NAS-DATEN/ ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
attached "ps auxw" while GUI was freezed. kernel 5.4.1-050401-generic no swap I restarted GUI using /etc/init.d/sddm restart right now only the KDE taskbar and menu are locked, Alt-Tab and programs still work. (this is a rather new phenomena) I already experienced this once, where some programs were freezed too (eg libreoffice) and others weren't. I only got a message like "program does not answer, force close it"? maybe this is a second hand problem as some inter-process communication locks apps when KDE is locked? after about 5 minutes KDE bar crashed and restarted. now works. from syslog while KDE bar locked: pulseaudio[30539]: E: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. ... PackageKit: daemon quit systemd[1]: packagekit.service: Main process exited, code=killed, status=15/TERM systemd[1]: packagekit.service: Succeeded. ... dbus-daemon[1772]: [system] Activating via systemd: service name='org.freedesktop.PackageKit' unit='packagekit.service' requested by ':1.679' (uid=1000 pid=32050 comm="/usr/bin/plasmashell ") systemd[1]: Starting PackageKit Daemon... PackageKit: daemon start dbus-daemon[1772]: [system] Successfully activated service 'org.freedesktop.PackageKit' systemd[1]: Started PackageKit Daemon. ** Attachment added: "processes.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+attachment/5310701/+files/processes.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
** Summary changed: - GUI freeze on high disk IO, but disabling swap fixes it + KDE GUI freeze on high disk IO, but disabling swap fixes it -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs