same as previous poster. I've seen this once each day after installing. Kern.log and syslog baloon until drive is full. Kernel / system locks up as described in previous entries.
Ubuntu 16.04.1 running KDE Neon desktop kernel 4.4.0-57-generic no screensavers -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1474538 Title: nouveau driver fills syslog when running xscreensaver (molecule) Status in linux package in Ubuntu: Invalid Bug description: nouveau fills /var/log/kern.log and /var/log/syslog with _very_ frequent messages when the molecule xscreensaver is running. This is a big problem as it prevents me from letting my machine do anything overnight (with the screenlock on). I haven't tested other screensavers and don't appear to get messages otherwise. Here is an excerpt: ====================8< CUT HERE 8<================================================================= $ tail -n 3000 kern.log.1 | head -n 50 Jul 10 18:02:35 dioo-XPS kernel: [114893.357149] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.406261] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.406269] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.420442] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.420447] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.479210] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.479217] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.568349] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.568356] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.622806] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.622813] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.637217] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.637221] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.695836] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.695843] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.784309] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.784316] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.838180] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.838187] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.853754] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.853759] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.913521] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.913528] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114893.977242] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114893.977249] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114894.068780] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114894.068788] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114894.122599] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114894.122606] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114894.137025] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114894.137030] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:35 dioo-XPS kernel: [114894.195675] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:35 dioo-XPS kernel: [114894.195682] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.284069] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.284078] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.339830] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.339837] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.353411] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.353416] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.412188] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.412204] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.501906] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.501913] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.558826] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.558831] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.570001] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.570006] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.628831] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ Jul 10 18:02:36 dioo-XPS kernel: [114894.628839] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[16558]] subc 5 mthd 0x0000 data 0x0000906e Jul 10 18:02:36 dioo-XPS kernel: [114894.717193] nouveau E[ PFIFO][0000:01:00.0] PBDMA0: LBREQ ====================8< CUT HERE 8<================================================================== Both log files are actually 99GiB (they'd be bigger, but at that point my / partition was full). Both files contain almost 975M lines each (which is quite a lot for a file that gets rotated daily!) I run a minimal system (log in to the console, start i3 with startx) and I have a keybinding to launch a xscreensaver (specifically the molecule screensaver from xscreensaver-gl-extra). I had no problem under Ubuntu 15.04 32 bits, but for work-related reasons, I had to downgrade to 14.04 (64 bits). Both the default kernel (I don't remember which version it was) and 3.19.0-22 exhibit the problem. $ lspci -nn | grep VGA 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1286] (rev a1) I am not sure if this is relevant, but I have three screens all connected to the nVidia card. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.19.0-22-generic 3.19.0-22.22~14.04.1 ProcVersionSignature: Ubuntu 3.19.0-22.22~14.04.1-generic 3.19.8-ckt1 Uname: Linux 3.19.0-22-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 Date: Tue Jul 14 15:31:42 2015 InstallationDate: Installed on 2015-07-03 (10 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: linux-lts-vivid UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1474538/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
