Created attachment 8762 [details] output of "journalctl -b" Description of problem: I'm running a up-to-date cauldron with Plasma using the nouveau driver. I'm experiencing desktop freezes and when looking at the logs to see if there was any clue as to what the problem was, I saw the following kernel messages several (7) times (full log in attachment): kernel: resource sanity check: requesting [mem 0xcff9c000-0xd009bfff], which spans more than 0000:01:00.0 [mem 0xce000000-0xcfffffff 64bit pref] kernel: caller nv50_instobj_boot+0xac/0x120 [nouveau] mapping multiple BARs kernel: BUG: unable to handle kernel paging request at ffffc2ba00810000 I don't know if these messages are related to the freezes or not but they are an indication of a problem in the nouveau kernel driver. The desktop can be unfrozen by switching to another virtual console and back, except when I start a second X session, then the freeze is permanent and I can't even switch to another virtual console. The sysrq keys still worked. Version-Release number of selected component (if applicable): # rpm -qa | grep -E 'kernel|nouveau' | sort kernel-desktop-4.8.14-1.mga6-1-1.mga6 kernel-desktop-devel-4.8.14-1.mga6-1-1.mga6 kernel-desktop-devel-latest-4.8.14-1.mga6 kernel-desktop-latest-4.8.14-1.mga6 kernel-firmware-20160914-1.mga6 kernel-firmware-nonfree-20160914-2.mga6.nonfree kernel-userspace-headers-4.8.14-1.mga6 lib64drm_nouveau2-2.4.74-1.mga6 lib64vdpau-driver-nouveau-13.0.2-2.mga6.tainted libdrm_nouveau2-2.4.74-1.mga6 libvdpau-driver-nouveau-13.0.2-2.mga6.tainted task-plasma5-minimal-5.8.4-1.mga6 x11-driver-video-nouveau-1.0.13-2.mga6 How reproducible: Don't know how to trigger the freezes that can be unfrozen by a virtual console switch. These have happened several times so far. The two times I tried starting a second user session, the desktop freezes and only a sysrq or hard reset can unfreeze it. Steps to Reproduce: 1. Start a desktop Plasma session, in Xorg using the nouveau driver; 2. Start a second user session; 3. The desktop should freeze several seconds in to the session.
CC: (none) => marja11Assignee: bugsquad => kernel
Is this still an issue with 4.9.2 ?
CC: (none) => tmb
I'm no longer seeing the kernel messages mentioned in the issue description. I'm also no longer seeing desktop freezes, except when starting a second X session. The freezes when starting a second session are likely independent on this issue so I may open another issue for it. For now, since no one else complained about this issue, I'm closing this issue as resolved+fixed. # uname -a Linux marte 4.9.3-desktop-1.mga6 #1 SMP Thu Jan 12 23:02:31 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux # rpm -qa | grep -E 'kernel|nouveau' | sort kernel-desktop-4.9.3-1.mga6-1-1.mga6 kernel-desktop-devel-4.9.3-1.mga6-1-1.mga6 kernel-desktop-devel-latest-4.9.3-1.mga6 kernel-desktop-latest-4.9.3-1.mga6 kernel-firmware-20170101-1.mga6 kernel-firmware-nonfree-20170101-1.mga6.nonfree kernel-userspace-headers-4.9.3-1.mga6 lib64drm_nouveau2-2.4.74-1.mga6 libdrm_nouveau2-2.4.74-1.mga6 x11-driver-video-nouveau-1.0.13-2.mga6
Status: NEW => RESOLVEDResolution: (none) => FIXED