https://bugs.kde.org/show_bug.cgi?id=404192
--- Comment #4 from Kyle K <kylek...@gmail.com> --- (In reply to David Edmundson from comment #1) > can you get a backtrace with > > "thread apply all bt" > > thread 0 is just blocked waiting on others > Also can I see your ~/.config/kdeglobals Done, sorry I haven't debugged with gdb in ages. I'm not sure if the gdb backtrace is useful at all. I saw that Thread 7 did get inside of libGLX_nvidia.so routines, I wonder if this is the thread that's consuming 100% of a core? I will research if there's a way to tell which Thread is spinning, seems like rest of the threads are sleeping or waiting. 1 other interesting thing that happens is that my PC fails to suspend whenever kscreenlocker_greet 100% cpu wakeup incident gets triggered, upon suspend the PC turns off HDDs/keyboard/mouse but the still continues running and monitor switches to tty1 and displays this error: Freezing of tasks failed after 20.005 seconds (1 tasks refusing to freeze, wq_busy=0) In kernel log I see something regarding "QQuickPixmapRea" and 16963, I looked for 16963 and it happens to be PID of /usr/bin/ksmserver Feb 11 06:28:43 ROG kernel: Freezing user space processes ... Feb 11 06:28:43 ROG kernel: Freezing of tasks failed after 20.005 seconds (1 tasks refusing to freeze, wq_busy=0): Feb 11 06:28:43 ROG kernel: QQuickPixmapRea D 0 16963 30621 0x00000124 Feb 11 06:28:43 ROG kernel: Call Trace: Feb 11 06:28:43 ROG kernel: __schedule+0x29e/0x840 Feb 11 06:28:43 ROG kernel: schedule+0x2c/0x80 Feb 11 06:28:43 ROG kernel: request_wait_answer+0xa3/0x210 Feb 11 06:28:43 ROG kernel: ? wait_woken+0x80/0x80 Feb 11 06:28:43 ROG kernel: __fuse_request_send+0x69/0x90 Feb 11 06:28:43 ROG kernel: fuse_request_send+0x29/0x30 Feb 11 06:28:43 ROG kernel: fuse_simple_request+0xdd/0x1a0 Feb 11 06:28:43 ROG kernel: fuse_dentry_revalidate+0x1a1/0x330 Feb 11 06:28:43 ROG kernel: d_revalidate.part.26+0x10/0x20 Feb 11 06:28:43 ROG kernel: lookup_fast+0x30e/0x330 Feb 11 06:28:43 ROG kernel: walk_component+0x49/0x4b0 Feb 11 06:28:43 ROG kernel: ? inode_permission+0x63/0x1a0 Feb 11 06:28:43 ROG kernel: link_path_walk+0x2c6/0x540 Feb 11 06:28:43 ROG kernel: path_openat+0x87/0xdd0 Feb 11 06:28:43 ROG kernel: ? seccomp_run_filters+0x5d/0xc0 Feb 11 06:28:43 ROG kernel: do_filp_open+0x93/0x100 Feb 11 06:28:43 ROG kernel: ? __alloc_fd+0x46/0x140 Feb 11 06:28:43 ROG kernel: do_sys_open+0x177/0x270 Feb 11 06:28:43 ROG kernel: __x64_sys_openat+0x20/0x30 Feb 11 06:28:43 ROG kernel: do_syscall_64+0x5a/0x110 Feb 11 06:28:43 ROG kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Feb 11 06:28:43 ROG kernel: RIP: 0033:0x7fb8b1bb1d09 Feb 11 06:28:43 ROG kernel: Code: Bad RIP value. Feb 11 06:28:43 ROG kernel: RSP: 002b:00007fb89329e660 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 Feb 11 06:28:43 ROG kernel: RAX: ffffffffffffffda RBX: 00007fb88c021f48 RCX: 00007fb8b1bb1d09 Feb 11 06:28:43 ROG kernel: RDX: 0000000000080000 RSI: 00007fb88c021f48 RDI: 00000000ffffff9c Feb 11 06:28:43 ROG kernel: RBP: 00007fb88c004e20 R08: 0000000000000000 R09: 0000000000000000 Feb 11 06:28:43 ROG kernel: R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000 Feb 11 06:28:43 ROG kernel: R13: 00007fb89329e6e8 R14: 00007fb88c004e40 R15: 00007fb89329e988 Feb 11 06:28:43 ROG kernel: OOM killer enabled. Feb 11 06:28:43 ROG kernel: Restarting tasks ... done. TO summarize, if PC is cold booted the 1st suspend will go OK, then on wakeup I will see kscreenlocker_greet eating 100% of cpu core, so I kill it and get back to DE, on next suspend I cannot suspend the PC due to ksmserver refusing to freeze its tasks. -- You are receiving this mail because: You are watching all bug changes.
