With rc6 off the hangup happened 2 minutes after booting: $ dmesg|grep i915 [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/System-root ro quiet splash i915.i915_enable_rc6=0 vt.handoff=7 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/System-root ro quiet splash i915.i915_enable_rc6=0 vt.handoff=7 [ 0.857239] i915 0000:00:02.0: power state changed by ACPI to D0 [ 0.857242] i915 0000:00:02.0: power state changed by ACPI to D0 [ 0.857458] i915 0000:00:02.0: setting latency timer to 64 [ 0.877771] i915 0000:00:02.0: irq 44 for MSI/MSI-X [ 1.619983] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 128.787009] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [ 128.787013] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [ 254.699283] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Seems it's time to return to 3.5.0-25-generic. ** Attachment added: "i915_error_state" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+attachment/3583694/+files/i915_error_state -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic CPU hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
