<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - DRI3 rendering gets stuck waiting for present idle notify event" href="https://bugs.freedesktop.org/show_bug.cgi?id=84252#c31">Comment # 31</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - DRI3 rendering gets stuck waiting for present idle notify event" href="https://bugs.freedesktop.org/show_bug.cgi?id=84252">bug 84252</a> from <a class="email" href="mailto:liquid.acid@gmx.net" title="Tobias Jakobi <liquid.acid@gmx.net>"> Tobias Jakobi</a> <pre>I tried to triage this further. The issue is a threading problem. I can 'fix' this reliably by disabling (in-game option) the multi-core rendering. Here's the thread information for both configurations. Multi-core rendering disabled: (gdb) info threads Id Target Id Frame 20 Thread 0xf5344b40 (LWP 5361) "hl2_linux" 0xf77b7c90 in __kernel_vsyscall () 19 Thread 0xf4b43b40 (LWP 5362) "IOJob0" 0xf77b7c90 in __kernel_vsyscall () 18 Thread 0xf2a9cb40 (LWP 5364) "hl2_linux" 0xf77b7c90 in __kernel_vsyscall () 17 Thread 0xeb3f3b40 (LWP 5365) "UICEFThread" 0xf77b7c90 in __kernel_vsyscall () 16 Thread 0xeb2f2b40 (LWP 5366) "BrowserDBThread" 0xf77b7c90 in __kernel_vsyscall () 15 Thread 0xeaaf1b40 (LWP 5367) "SignalSender" 0xf77b7c90 in __kernel_vsyscall () 14 Thread 0xea8dab40 (LWP 5368) "NetworkChangeNo" 0xf77b7c90 in __kernel_vsyscall () 13 Thread 0xea0d9b40 (LWP 5369) "inotify_reader" 0xf77b7c90 in __kernel_vsyscall () 12 Thread 0xe98d8b40 (LWP 5370) "Cef_FileThread" 0xf77b7c90 in __kernel_vsyscall () 11 Thread 0xe90d7b40 (LWP 5371) "Cef_IOThread" 0xf77b7c90 in __kernel_vsyscall () 10 Thread 0xe88d6b40 (LWP 5372) "AppCacheDBThrea" 0xf77b7c90 in __kernel_vsyscall () 9 Thread 0xe7e0fb40 (LWP 5373) "hl2_linux" 0xf77b7c90 in __kernel_vsyscall () 8 Thread 0xe7af4b40 (LWP 5374) "SDLAudioDev2" 0xf77b7c90 in __kernel_vsyscall () 7 Thread 0xda757b40 (LWP 5380) "CmpJob0" 0xf77b7c90 in __kernel_vsyscall () 6 Thread 0xda656b40 (LWP 5381) "CmpJob1" 0xf77b7c90 in __kernel_vsyscall () 5 Thread 0xda555b40 (LWP 5382) "CmpJob2" 0xf77b7c90 in __kernel_vsyscall () 4 Thread 0xd5453b40 (LWP 5383) "SaveJob0" 0xf77b7c90 in __kernel_vsyscall () 3 Thread 0xd5352b40 (LWP 5384) "QueuedPacketSen" 0xf77b7c90 in __kernel_vsyscall () 2 Thread 0xd007db40 (LWP 5385) "AchievementSave" 0xf77b7c90 in __kernel_vsyscall () * 1 Thread 0xf7137700 (LWP 5360) "hl2_linux" 0xf77b7c90 in __kernel_vsyscall () Multi-core rendering enabled: (gdb) info threads Id Target Id Frame 21 Thread 0xf532db40 (LWP 5449) "hl2_linux" 0xf77a0c90 in __kernel_vsyscall () 20 Thread 0xf4b2cb40 (LWP 5450) "IOJob0" 0xf77a0c90 in __kernel_vsyscall () 19 Thread 0xf2a85b40 (LWP 5461) "hl2_linux" 0xf77a0c90 in __kernel_vsyscall () 18 Thread 0xeb3dcb40 (LWP 5463) "UICEFThread" 0xf77a0c90 in __kernel_vsyscall () 17 Thread 0xeb2dbb40 (LWP 5464) "BrowserDBThread" 0xf77a0c90 in __kernel_vsyscall () 16 Thread 0xeaadab40 (LWP 5465) "SignalSender" 0xf77a0c90 in __kernel_vsyscall () 15 Thread 0xea8c3b40 (LWP 5469) "NetworkChangeNo" 0xf77a0c90 in __kernel_vsyscall () 14 Thread 0xea0c2b40 (LWP 5471) "inotify_reader" 0xf77a0c90 in __kernel_vsyscall () 13 Thread 0xe98c1b40 (LWP 5472) "Cef_FileThread" 0xf77a0c90 in __kernel_vsyscall () 12 Thread 0xe90c0b40 (LWP 5473) "Cef_IOThread" 0xf77a0c90 in __kernel_vsyscall () 11 Thread 0xe88bfb40 (LWP 5475) "AppCacheDBThrea" 0xf77a0c90 in __kernel_vsyscall () 10 Thread 0xe7df8b40 (LWP 5476) "hl2_linux" 0xf77a0c90 in __kernel_vsyscall () 9 Thread 0xe7addb40 (LWP 5477) "SDLAudioDev2" 0xf77a0c90 in __kernel_vsyscall () 8 Thread 0xe4895b40 (LWP 5481) "CmpJob0" 0xf77a0c90 in __kernel_vsyscall () 7 Thread 0xe4794b40 (LWP 5482) "CmpJob1" 0xf77a0c90 in __kernel_vsyscall () 6 Thread 0xe4693b40 (LWP 5483) "CmpJob2" 0xf77a0c90 in __kernel_vsyscall () 5 Thread 0xdf591b40 (LWP 5484) "SaveJob0" 0xf77a0c90 in __kernel_vsyscall () 4 Thread 0xdf490b40 (LWP 5485) "QueuedPacketSen" 0xf77a0c90 in __kernel_vsyscall () 3 Thread 0xda27db40 (LWP 5486) "AchievementSave" 0xf77a0c90 in __kernel_vsyscall () 2 Thread 0xddf4cb40 (LWP 5501) "MatQueue0" 0xf77a0c90 in __kernel_vsyscall () * 1 Thread 0xf7120700 (LWP 5448) "hl2_linux" 0xf77a0c90 in __kernel_vsyscall () With multi-core rendering the 'MatQueue0' thread appears (the one which then hangs later). My guess is that without multi-core the rendering is done from the main thread. So something in our stack (xorg-server / mesa / DDX) is not thread-safe.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> </ul> </body> </html>