Bug 198243
| Summary: | nouveau: X11 server hangs while DPMS active | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Eduardo Santiago (kernelbugs) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.12.12 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | Xorg.0.log | ||
Created attachment 261315 [details] Xorg.0.log Symptom: DPMS is engaged, monitors off. Pressing keys has no effect. System is alive. ssh'ing in, trying xdpyinfo (or any X command) on :0.0 results in a hung client. Problem appeared between 4.9.34 and 4.12.12, sorry I can't narrow it down further. It happens within a few hours of boot, and has never hung while I'm actually doing something - only when I leave the keyboard and come back to DPMS-blanked system. Xorg server 1.19.5; hang has never happened on 4.9.34. It has happened twice in the last 24 hours on 4.14.8. strace on the X process yields rapid infinite loop of: ioctl(12, DRM_IOCTL_NOUVEAU_GEM_CPU_PREP, 0x7ffee9b26240) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- There is absolutely nothing in /var/log/messages. lspci reports the card as: 01:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9500 GT] (rev a1) (prog-if 00 [VGA controller])