SUMMARY KWin freezes when starting up Brave browser from the command line with the `--tor` option. The mouse pointer locks up. Can be resolved only with a hard reboot. Opening a private window with Tor from within Brave works normally. This is with Brave 1.44.112-1 in the KWin Wayland session STEPS TO REPRODUCE 1. Start Brave from the command line with `brave-browser --tor`. Unfortunately there is no --verbose output before the lockup. OBSERVED RESULT KWin locks up completely. EXPECTED RESULT The window should open normally, or it should fail gracefully. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20221015 KDE Plasma Version: 5.26.0 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.6 Kernel Version: 6.0.1-1-default (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 Manufacturer: LENOVO Product Name: 20LDCTO1WW System Version: ThinkPad X1 Yoga 3rd ADDITIONAL INFORMATION
Can't reproduce. Can you ssh in from another system and check where KWin hangs?
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Created attachment 153760 [details] Backtrace with KWin in frozen state after brave-browser --tor hangs Here is a backtrace. I'm unsure whether I got it by the correct procedure - I connect via ssh, attach GDB to the kwin_wayland process by issuing `sudo gdb -pid $(pidof kwin_wayland)`, then I set the logging file and `set logging enabled on` and `continue`. When KWin freezes, there is no signal issued, so I stop KWin manually by issuing SIGINT from GDB with Ctrl+C, then I get the backtrace with `bt full`. I noticed that KWin seems to be doing something (just not reacting to mouse events), so I've done the Ctrl+C - `bt full` - `continue` cycle a few times in the backtrace. Also when I detach GDB again, I can kill the brave processes from SSH which frees up KWin again, after which I get a bunch of output in the console where I started Brave: > brave-browser --tor Nov 15 10:04:15.063 [notice] Tor 0.4.7.10 running on Linux with Libevent 2.1.12-stable, OpenSSL 1.1.1s, Zlib 1.2.13, Liblzma N/A, Libzstd N/A and Glibc 2.35 as libc. Nov 15 10:04:15.063 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://support.torproject.org/faq/staying-anonymous/ Nov 15 10:04:15.063 [notice] Read configuration file "/home/reichmuth/.config/BraveSoftware/Brave-Browser/biahpgbdmdkfgndcmfiipgcebobojjkp/1.0.29/tor-torrc". Nov 15 10:04:15.063 [notice] Read configuration file "/home/reichmuth/.config/BraveSoftware/Brave-Browser/biahpgbdmdkfgndcmfiipgcebobojjkp/1.0.29/tor-torrc". Nov 15 10:04:15.066 [notice] Opening Socks listener on 127.0.0.1:0 Nov 15 10:04:15.066 [notice] Socks listener listening on port 36655. Nov 15 10:04:15.066 [notice] Opened Socks listener connection (ready) on 127.0.0.1:36655 Nov 15 10:04:15.066 [notice] Opening Control listener on 127.0.0.1:0 Nov 15 10:04:15.066 [notice] Control listener listening on port 41319. Nov 15 10:04:15.066 [notice] Opened Control listener connection (ready) on 127.0.0.1:41319 Nov 15 10:04:15.000 [notice] Bootstrapped 0% (starting): Starting [3630:3630:1115/100415.305621:ERROR:CONSOLE(1)] "This document requires 'TrustedScript' assignment.", source: chrome://newtab/private_new_tab.bundle.js (1) Nov 15 10:04:15.000 [notice] Starting with guard context "default" [3630:3630:1115/100415.781030:ERROR:CONSOLE(1)] "This document requires 'TrustedScript' assignment.", source: chrome://newtab/private_new_tab.bundle.js (1) Nov 15 10:04:16.000 [notice] Bootstrapped 5% (conn): Connecting to a relay Nov 15 10:04:16.000 [notice] Bootstrapped 10% (conn_done): Connected to a relay Nov 15 10:04:17.000 [notice] New control connection opened from 127.0.0.1. Nov 15 10:04:36.000 [notice] Bootstrapped 14% (handshake): Handshaking with a relay Nov 15 10:04:36.000 [notice] Bootstrapped 15% (handshake_done): Handshake with a relay done Nov 15 10:04:36.000 [notice] Bootstrapped 75% (enough_dirinfo): Loaded enough directory info to build circuits Nov 15 10:04:36.000 [notice] Bootstrapped 90% (ap_handshake_done): Handshake finished with a relay to build circuits Nov 15 10:04:36.000 [notice] Bootstrapped 95% (circuit_create): Establishing a Tor circuit Nov 15 10:04:37.000 [notice] Bootstrapped 100% (done): Done [3630:3630:1115/100444.657464:ERROR:gpu_process_host.cc(974)] GPU process exited unexpectedly: exit_code=512 [3846:3846:1115/100444.814583:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times! [3846:3846:1115/100444.816511:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 2 times! [3846:3846:1115/100444.897497:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 3 times! [3630:3630:1115/100529.845188:ERROR:gpu_process_host.cc(974)] GPU process exited unexpectedly: exit_code=512 [3889:3889:1115/100530.029862:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times! [3889:3889:1115/100530.030710:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 2 times! [1115/100600.065734:ERROR:process_memory_linux.cc(49)] pread64: Input/output error (5) [3630:3630:1115/100600.075494:ERROR:gpu_process_host.cc(974)] GPU process exited unexpectedly: exit_code=512 [3728:8:1115/100600.145970:ERROR:command_buffer_proxy_impl.cc(128)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer. [3728:8:1115/100600.146316:ERROR:command_buffer_proxy_impl.cc(128)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer. [1] 3624 terminated brave-browser --tor
That looks like KWin is stuck in some loop processing xcb events.
*** This bug has been marked as a duplicate of bug 442846 ***