Залогинившись с другого компьютера, удалось наконец словить последние сообщения об ошибках, прежде чем система окончательно замёрзла.
[ 15.588371] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[ 15.789023] init: plymouth-upstart-bridge main process ended, respawning
[ 16.184640] init: plymouth-stop pre-start process (1277) terminated with status 1
[ 16.507378] agpgart-nvidia 0000:00:00.0: AGP 3.0 bridge
[ 16.507392] agpgart-nvidia 0000:00:00.0: putting AGP V3 device into 4x mode
[ 16.507453] nvidia 0000:03:00.0: putting AGP V3 device into 4x mode
[ 76.067351] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[ 3463.349427] perf samples too long (2508 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 4892.020494] NVRM: GPU at 0000:03:00.0 has fallen off the bus.
[ 4892.020511] NVRM: GPU at 0000:03:00.0 has fallen off the bus.
[ 4893.152258] irq 19: nobody cared (try booting with the "irqpoll" option)
[ 4893.152268] CPU: 0 PID: 1216 Comm: Xorg Tainted: PF O 3.13.0-24-generic #47-Ubuntu
[ 4893.152271] Hardware name: ASUSTeK Computer INC. A7N8X-E/A7N8X-E, BIOS ASUS A7N8X-E Deluxe ACPI BIOS Rev 1013 11/12/2004
[ 4893.152273] 00000000 00000000 f407dec8 c164b8c3 f648be40 f407dee8 c10a78e9 c182a4ec
[ 4893.152280] 00000013 00000006 00000000 f648be40 00000013 f407df0c c10a7ce3 00000000
[ 4893.152285] 000009ae 28483966 00118580 f648be40 f648be94 00000000 f407df48 c10a5c35
[ 4893.152290] Call Trace:
[ 4893.152302] [<c164b8c3>] dump_stack+0x41/0x52
[ 4893.152310] [<c10a78e9>] __report_bad_irq+0x29/0xd0
[ 4893.152314] [<c10a7ce3>] note_interrupt+0x153/0x1a0
[ 4893.152318] [<c10a5c35>] handle_irq_event_percpu+0xc5/0x1a0
[ 4893.152322] [<c10a5d41>] handle_irq_event+0x31/0x50
[ 4893.152326] [<c10a86ae>] handle_fasteoi_irq+0x4e/0xe0
[ 4893.152333] [<c1011847>] handle_irq+0x37/0x90
[ 4893.152339] [<c165a2ec>] do_IRQ+0x3c/0xb0
[ 4893.152342] [<c165a0b3>] common_interrupt+0x33/0x38
[ 4893.152345] handlers:
[ 4893.152705] [<f9fe91f0>] nv_kern_isr [nvidia]
[ 4893.152707] Disabling IRQ #19Что тут написано, почему теряется прерывание, почему система замерзает?
Похоже, что не только я этим страдаю:
GPU at * has fallen off the bus
http://www.cyberciti.biz/faq/debian-ubuntu-rhel-fedora-linux-nvidia-nvrm-gpu-...
https://devtalk.nvidia.com/default/topic/537302/linux/reproducible-nvrm-gpu-a...
http://askubuntu.com/questions/235760/unity-does-not-appear-after-installing-...
В последней ссылке решения из первых двух указаны как нерабочие :-(
