I tested the upstream Linux 4.2 kernel. As per https://bugs.freedesktop.org/show_bug.cgi?id=87244#c10, applying said commit solves the problem. When time permits, I will create a 3.19 kernel with the cherry-picked commit and give it a try.
** Bug watch added: freedesktop.org Bugzilla #87244 https://bugs.freedesktop.org/show_bug.cgi?id=87244 -- 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/1496290 Title: System freeze due to "angry" nouveau driver Status in linux package in Ubuntu: Incomplete Bug description: Starting with the 3.19 kernels (Vivid), the system frequently freezes in the nouveau driver, with the following lines (w/ out timestamp and hostname) always being reported in "/var/log/kern.log" and/or "/var/log/syslog" just before the system becomes unresponsive and a hard reset becomes necessary. nouveau E[ PFIFO][0000:01:00.0] still angry after 101 spins, halt The bug is also reported in https://bugs.freedesktop.org/show_bug.cgi?id=87244, and the fix seems to be to cherry pick https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=adc346b133c952ec6988d90f6fa79cbe0a3eb7ef which is included in Linux 4.0 (if I am not mistaken). Here's some more info: lsb_release -rd: Description: Ubuntu 14.04.3 LTS Release: 14.04 Affected package: linux-generic-lts-vivid-3.19.0.28.15 (As the affected package breaks my system reliably several times a day, I reverted to linux-generic-lts-utopic.) --- ApportVersion: 2.14.1-0ubuntu3.13 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: de107192 2480 F.... pulseaudio /dev/snd/controlC0: de107192 2480 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 14.04 InstallationDate: Installed on 2015-07-17 (61 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: LENOVO 43892DG Package: linux (not installed) ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-50-generic root=/dev/mapper/SETEC-UBUNTU ro rootflags=subvol=@ quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-50.66~14.04.1-generic 3.16.7-ckt16 RelatedPackageVersions: linux-restricted-modules-3.16.0-50-generic N/A linux-backports-modules-3.16.0-50-generic N/A linux-firmware 1.127.15 Tags: trusty Uname: Linux 3.16.0-50-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/03/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 6NET84WW (1.45 ) dmi.board.name: 43892DG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6NET84WW(1.45):bd10/03/2012:svnLENOVO:pn43892DG:pvrThinkPadW510:rvnLENOVO:rn43892DG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 43892DG dmi.product.version: ThinkPad W510 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1496290/+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