Hello!
have a that things in dmesg:

40.870438] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 43.460447] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 45.920419] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 49.173732] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 51.442255] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 55.057500] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 57.273390] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 59.196347] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 479.624644] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 479.998521] nvidia_uvm: Loaded the UVM driver, major device number 245
[ 1835.974523] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 1836.191086] NVRM: GPU at 0000:01:00.0 has fallen off the bus.


that "fallen out the bus" become after i run "nvidia-smi" command - screen flashes, and sometime freeze, and no changes until hard restart. in the same time i can log in in machine via ssh - all working, dmesg show the above info. if i again from ssh run nvidia-smi command, that terminal session also lock up.

system is slackware64 14.1, x64.
drivers is latest nvidia 331.49, but previous - 331.33 shows exactly the same.
try to install fresh system on spare disc - the same.
videocard is palit GT210 /512M, PCIe
i try to swap it with my old asus 9400GT on PCIe, and not have any problems - it work about week under a load ( boinc). try to swap that gt210 on warranty, they give me new, but the same problem exactly.
motherboard is asus p8h61 rev 2.0, i3 3220 cpu, seasonic ss-430GB PSU...
any ideas?

[ 41.479489] nvidia 0000:01:00.0: irq 44 for MSI/MSI-X
[ 42.452826] NVRM: GPU at 0000:01:00: GPU-92a08fb6-43b0-25db-8569-243c6764cd69
[ 42.452831] NVRM: Xid (0000:01:00): 57, Failed shmoo sddr3 link training
[ 46.073060] i2c /dev entries driver
[ 66.096782] nvidia_uvm: Loaded the UVM driver, major device number 245


have that on logs too sometimes. maybe this too is revelant...

lspci

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC Controller (rev 05)
00:1f.2 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 4 port SATA IDE Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
00:1f.5 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 2 port SATA IDE Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 09)
04:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 01)
05:00.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 30)

lsmod:

Module Size Used by
nvidia_uvm 26086 2
i2c_dev 5843 0
ipv6 292446 12
lp 9851 0
ppdev 5862 0
parport_pc 19332 0
parport 30389 3 lp,ppdev,parport_pc
fuse 73848 1
eeepc_wmi 4608 0
asus_wmi 16202 1 eeepc_wmi
sparse_keymap 3074 1 asus_wmi
rfkill 15522 1 asus_wmi
nvidia 10634350 14 nvidia_uvm
intel_powerclamp 8391 0
coretemp 5870 0
video 11451 1 asus_wmi
snd_hda_codec_hdmi 29622 4
mperf 1163 0
processor 27543 0
thermal 8644 0
fan 2617 0
thermal_sys 22993 5 fan,video,intel_powerclamp,thermal,processor
i2c_i801 13860 0
freq_table 2628 1 thermal_sys
kvm 363491 0
snd_hda_codec_realtek 34792 1
drm 229054 1 nvidia
agpgart 27267 1 drm
hwmon 1337 3 coretemp,thermal_sys,asus_wmi
snd_hda_intel 34861 0
r8169 57775 0
3c59x 35266 0
mii 3955 2 3c59x,r8169
button 4696 0
snd_hda_codec 143196 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
ehci_pci 3688 0
i2c_core 20936 4 drm,i2c_i801,i2c_dev,nvidia
mei_me 7728 0
crc32_pclmul 2883 0
crc32c_intel 14113 0
ehci_hcd 39275 1 ehci_pci
snd_hwdep 6388 1 snd_hda_codec
snd_pcm 76009 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc 7098 2 snd_pcm,snd_hda_intel
snd_timer 18614 1 snd_pcm
snd 58630 7 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_intel
lpc_ich 12841 0
evdev 10032 0
mei 42963 1 mei_me
ghash_clmulni_intel 4333 0
soundcore 5354 1 snd
microcode 13140 0
wmi 8243 1 asus_wmi
loop 18479 0

Here are some links:
http://www.cyberciti.biz/faq/debian-...allen-off-bus/
http://askubuntu.com/questions/19039...en-off-the-bus
https://devtalk.nvidia.com/default/topic/537302
https://forums.geforce.com/default/t...rash-randomly/

1) Try putting it in persistent mode, see first link.
2) Try a more recent driver if available.
3) Try removing flash player.
4) You could also try the nouveau driver.
5) Could be a hardware issue if the above didn't work.

thanks for advice. ill try first.
3. cannot be relevant, because i do not use X server.
4. not work because i need CUDA and OpenCL
5. looks strange, because, as i said, that is second gt210 card with precisely the same symptom. on other side - when i replace this gt210 card with 9400gt, and no chnages anything other, all works like charm.

It's probably a driver issue then.

problem still persists with persistent driver mode too.
finally problem eliminated by changing videacard from Palit GT210 to Asus GT210.
now all works without problems with the same drivers and system.