[OS] nvOC easy-to-use Linux Nvidia Mining

[pigseye]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error. 

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

[1714679592]

1714679592

[1714679592]

1714679592

[papampi]

Hello :-)
After I flash a hard disk with the nvOC image, is there an easy way to expand the filesystem to occupy the full capacity of the hard drive?

Flash with latest nvOC v19-2.0 Shrinked Image


Info:

Code:

Image size: 11 GB
Download ZIP size: 3.8 GB
Auto Expand to full size on first boot
Fixed copy 1bash from fat partition to SSD/HDD on first boot
SHA256: ACCA9787169E6E722ED74FB02DBE1C44E7760CEB537CB79D4C61C7FFF8AD3057

Or :

Code:

cd /home/m1/Downloads
wget -N https://raw.githubusercontent.com/papampi/nvOC_by_fullzero_Community_Release/19-2.1/expand_rootfs.sh
sudo /home/m1/Downloads/expand_rootfs.sh

Hello,
I flash the image, the rig boots into Ubuntu and everything goes fine until the next reboot when Ubuntu cannot load and gets into rescue mode:

Code:

error: unknown filesystem
Entering rescue mode
grub rescue >

Checking the volume, it show shows that somehow it didn't expand the filesystem

I imaged many SSD and USB's with it and none get to problems.
Did it expanded the partition on first boot and rebooted after 5 seconds?

Hi Papampi,
At first reboot it goes straight into rescue mode.

If I image the standard nvOC image (not the Shrinkied Image) and if I follow the "SSD-USB resize guide for nvOC" document, I run into a problem when I execute the command

Code:

gksudo gedit /etc/fstab

as I get the error:

Code:

m1@m1-desktop:~$ gksudo gedit /etc/fstab

(process:20027): Gtk-WARNING **: Locale not supported by C library.
	Using the fallback 'C' locale.

(gksudo:20027): Gtk-WARNING **: cannot open display: 

The system works pretty fine without extending the partition, so I guess I can leave everything like it is

If on first boot it goes to rescue mode then there should be a problem with downloaded image, have you checked it's SHA-256?

You ran "gksudo gedit" from local machine or some remote like TeamViewer or vnc?
What happens if you run the expand_rootfs.sh script on normal image?

Hi Papampi,
I didn't explain myself correctly.
The image SHA-256 is correct.
Ubuntu boot a first time normally displaying the window with the message "resizing partition at next boot..." (cannot remember the exact message). After this it reboots into rescue mode.
I didn't run "gksudo gedit" directly from the local machine, but through an SSH session

Delete all partitions then flash the shrinked image again, it should work.
May be a problem while imaging it, what program you used to flash it?
In ubuntu you can use the default Disk program and restore image or HDDRawCopy in windows.  

gksudo is the graphical interface for password of sudo and gedit is the graphical text editor in ubuntu you can not run them from ssh.
If you want to expand partition from ssh use:

Code:

cd /home/m1/Downloads
wget -N https://raw.githubusercontent.com/papampi/nvOC_by_fullzero_Community_Release/19-2.1/expand_rootfs.sh
sudo /home/m1/Downloads/expand_rootfs.sh

[papampi]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error. 

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

[papampi]

Sorry If this is posted somewhere on this fourm or the website but is there a way to setup profit switching and wifi?

There should be no conflict between them.

[papampi]

sudo: ./expand_rootfs.sh: command not found
i downloaded and i am in the directory.

If you Downloaded manually you should make it executable

Code:

chmod a+x expand_rootfs.sh

[WaveFront]

Hello :-)
After I flash a hard disk with the nvOC image, is there an easy way to expand the filesystem to occupy the full capacity of the hard drive?

Flash with latest nvOC v19-2.0 Shrinked Image


Info:

Code:

Image size: 11 GB
Download ZIP size: 3.8 GB
Auto Expand to full size on first boot
Fixed copy 1bash from fat partition to SSD/HDD on first boot
SHA256: ACCA9787169E6E722ED74FB02DBE1C44E7760CEB537CB79D4C61C7FFF8AD3057

Or :

Code:

cd /home/m1/Downloads
wget -N https://raw.githubusercontent.com/papampi/nvOC_by_fullzero_Community_Release/19-2.1/expand_rootfs.sh
sudo /home/m1/Downloads/expand_rootfs.sh

Hello,
I flash the image, the rig boots into Ubuntu and everything goes fine until the next reboot when Ubuntu cannot load and gets into rescue mode:

Code:

error: unknown filesystem
Entering rescue mode
grub rescue >

Checking the volume, it show shows that somehow it didn't expand the filesystem

I imaged many SSD and USB's with it and none get to problems.
Did it expanded the partition on first boot and rebooted after 5 seconds?

Hi Papampi,
At first reboot it goes straight into rescue mode.

If I image the standard nvOC image (not the Shrinkied Image) and if I follow the "SSD-USB resize guide for nvOC" document, I run into a problem when I execute the command

Code:

gksudo gedit /etc/fstab

as I get the error:

Code:

m1@m1-desktop:~$ gksudo gedit /etc/fstab

(process:20027): Gtk-WARNING **: Locale not supported by C library.
	Using the fallback 'C' locale.

(gksudo:20027): Gtk-WARNING **: cannot open display: 

The system works pretty fine without extending the partition, so I guess I can leave everything like it is

If on first boot it goes to rescue mode then there should be a problem with downloaded image, have you checked it's SHA-256?

You ran "gksudo gedit" from local machine or some remote like TeamViewer or vnc?
What happens if you run the expand_rootfs.sh script on normal image?

Hi Papampi,
I didn't explain myself correctly.
The image SHA-256 is correct.
Ubuntu boot a first time normally displaying the window with the message "resizing partition at next boot..." (cannot remember the exact message). After this it reboots into rescue mode.
I didn't run "gksudo gedit" directly from the local machine, but through an SSH session

Delete all partitions then flash the shrinked image again, it should work.
May be a problem while imaging it, what program you used to flash it?
In ubuntu you can use the default Disk program and restore image or HDDRawCopy in windows.  

gksudo is the graphical interface for password of sudo and gedit is the graphical text editor in ubuntu you can not run them from ssh.
If you want to expand partition from ssh use:

Code:

cd /home/m1/Downloads
wget -N https://raw.githubusercontent.com/papampi/nvOC_by_fullzero_Community_Release/19-2.1/expand_rootfs.sh
sudo /home/m1/Downloads/expand_rootfs.sh

Of course :-D
I run everything from gnome and it worked like a charm.
It's that when I follow a recipe I have the terrible bad habit of switching off my brain :-D

[pigseye]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error. 

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

[papampi]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error. 

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

Then you should edit 0miner to have your own settings.
Find the lines for your coin and edit them.

[pigseye]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error.  

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

Then you should edit 0miner to have your own settings.
Find the lines for your coin and edit them.

My apologies, but what is 0miner?  

I did edit the lines for ETC but couldn't find a way to make it work.  I also tried using a dot or a dash and my worker name with my windows bat files and that didn't work either. So I think that confirms this pool doesn't use dots or dashes.  Unfortunately, nvOC defaults to a slash even if you leave a blank in between the quotation marks.

Could you please provide a little more guidance?

Thanks

[papampi]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error.  

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

Then you should edit 0miner to have your own settings.
Find the lines for your coin and edit them.

My apologies, but what is 0miner?  

I did edit the lines for ETC but couldn't find a way to make it work.  I also tried using a dot or a dash and my worker name with my windows bat files and that didn't work either. So I think that confirms this pool doesn't use dots or dashes.  Unfortunately, nvOC defaults to a slash even if you leave a blank in between the quotation marks.

Could you please provide a little more guidance?

Thanks

0miner is the file that contains all the mining commands
Look in home folder

[leenoox]

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error.  

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

Then you should edit 0miner to have your own settings.
Find the lines for your coin and edit them.

My apologies, but what is 0miner?  

I did edit the lines for ETC but couldn't find a way to make it work.  I also tried using a dot or a dash and my worker name with my windows bat files and that didn't work either. So I think that confirms this pool doesn't use dots or dashes.  Unfortunately, nvOC defaults to a slash even if you leave a blank in between the quotation marks.

Could you please provide a little more guidance?

Thanks

Open Nautilus file explorer (it's the icon with folder sign on the left panel). This will open your /home directory. You will find 0miner file here, double click on it, it will open it for editing.
Find this section:

Code:

if [ $COIN == "ETC" ]then
ETCADDR="$ETC_ADDRESS/$ETC_WORKER"

And change it to:

Code:

if [ $COIN == "ETC" ]then
ETCADDR="$ETC_ADDRESS"

Save it and exit.
Double click on 1bash and make these changes:

Code:

DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="SLASH"
# ETC
ETC_WORKER="$WORKERNAME"
ETC_ADDRESS="replace_with_your_address"
ETC_POOL="etc-us.ethteam.com"
ETC_PORT="8008"
ETC_EXTENSION_ARGUMENTS=""

Save and exit.
Press F12 to open guake terminal and type:

Code:

./nvOC stop
./nvOC start

Or just reboot.

[thaelin]

@pigseye

I use just my wallet  pool and port on ethermine. Only one I could connect to and work.

"eu1-etc.ethermine.org

4444

thay

[pigseye]

Hi Leenoox!
Your instructions worked perfectly!  They also helped me understand how it works a little bit and that will give me more confidence to try other settings.

This type of guidance needs to be in a FAQ or help section somewhere.  It is very useful especially to linux and mining noobs like me.

Thank you so much!

Hi All,
Hope someone can help me.  Trying to mine ETC on the Ethteam pool.

nvOC boots fine and starts to mine but then I get an "Eth Authorization failed...retry in 20 seconds" error.  

I noticed the following in the 1bash file:

# Some pools require dot (address.worker), some require slash (address/worker) format.
# Depending on the pool you use, set this approprietly:
DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="DOT"   # DOT or SLASH

But the pool i am using does not use a dot or a slash.  is there a way to have blank where the dot or slash is?   When I don't have either DOT or SLASH in between the quotes it defaults to /.

Or is something else wrong?

Thanks!

if it does not use dot or slash how you set worker name in pool?

The pool doesn't require a worker name, just a wallet address.  But if you want a worker name you can use -eworker username.

Then you should edit 0miner to have your own settings.
Find the lines for your coin and edit them.

My apologies, but what is 0miner?  

I did edit the lines for ETC but couldn't find a way to make it work.  I also tried using a dot or a dash and my worker name with my windows bat files and that didn't work either. So I think that confirms this pool doesn't use dots or dashes.  Unfortunately, nvOC defaults to a slash even if you leave a blank in between the quotation marks.

Could you please provide a little more guidance?

Thanks

Open Nautilus file explorer (it's the icon with folder sign on the left panel). This will open your /home directory. You will find 0miner file here, double click on it, it will open it for editing.
Find this section:

Code:

if [ $COIN == "ETC" ]then
ETCADDR="$ETC_ADDRESS/$ETC_WORKER"

And change it to:

Code:

if [ $COIN == "ETC" ]then
ETCADDR="$ETC_ADDRESS"

Save it and exit.
Double click on 1bash and make these changes:

Code:

DOT_POOL_FORMAT_or_FORWARD_SLASH_POOL_FORMAT="SLASH"
# ETC
ETC_WORKER="$WORKERNAME"
ETC_ADDRESS="replace_with_your_address"
ETC_POOL="etc-us.ethteam.com"
ETC_PORT="8008"
ETC_EXTENSION_ARGUMENTS=""

Save and exit.
Press F12 to open guake terminal and type:

Code:

./nvOC stop
./nvOC start

Or just reboot.

[pigseye]

Hi Thay,
I appreciate your insight. 

Please check out Leenoox's suggestion on how to get to other pools that do not use a dot or a slash after the wallet address for worker name.  It worked great for me and will give you more pool options.

Thanks

@pigseye

I use just my wallet  pool and port on ethermine. Only one I could connect to and work.

"eu1-etc.ethermine.org

4444

thay

[leenoox]

Hi Leenoox!
Your instructions worked perfectly!  They also helped me understand how it works a little bit and that will give me more confidence to try other settings.

This type of guidance needs to be in a FAQ or help section somewhere.  It is very useful especially to linux and mining noobs like me.

Thank you so much!

You are welcome. I am glad it worked well for you and boosted your confidence. Please post future changes/modifications so other can benefit as well.
If you know of more pools that require this setup (no worker) please let us know. We can add it as an option in the next release (e.g. SLASH or DOT or NONE)

[ctlangtao]

It's too big to download.......

[WaveFront]

Hello,
When we get a watchdog alert, is there an easy way to determine which GPU created the error? It looks to me that in the example below, the all 10 GPUs are failing at the same time which is not possible.
Do you have any peace of advice?

Code:

WARNING: Tue Feb 27 09:35:24 CET 2018 - Problem found: See diagnostics below: 
Percent of GPUs bellow threshold: 100 % 
name, pstate, temperature.gpu, fan.speed [%], utilization.gpu [%], power.draw [W], power.limit [W] 
GeForce GTX 1060 6GB, P5, 63, 60 %, 1 %, 12.96 W, 80.00 W 
GeForce GTX 1060 6GB, P2, 45, 50 %, 0 %, 27.97 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 58, 50 %, 0 %, 13.95 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 59, 50 %, 0 %, 11.65 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 49, 50 %, 0 %, 12.42 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 56, 50 %, 0 %, 10.57 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 54, 50 %, 0 %, 12.23 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 59, 50 %, 0 %, 9.47 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 50, 50 %, 0 %, 12.10 W, 80.00 W 
GeForce GTX 1060 6GB, P5, 41, 50 %, 0 %, 13.65 W, 80.00 W 
 ✘ 09:35:03|cuda-4  Error CUDA mining: an illegal memory access was encountered 
CUDA error in func 'search' at line 489 : an illegal memory access was encountered. 
 ✘ 09:35:03|cuda-6  Error CUDA mining: an illegal memory access was encountered 
 m 09:35:04|ethminer Speed 231.75 Mh/s gpu/0 22.52 gpu/1 24.14 gpu/2 24.06 gpu/3 22.84 gpu/4 22.84 gpu/5 22.84 gpu/6 22.84 gpu/7 22.84 gpu/8 22.76 gpu/9 24.06 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:06|ethminer Speed 213.04 Mh/s gpu/0 20.73 gpu/1 22.13 gpu/2 22.13 gpu/3 20.99 gpu/4 20.99 gpu/5 20.99 gpu/6 20.99 gpu/7 20.99 gpu/8 20.99 gpu/9 22.13 [A338+0:R0+0:F0] Time: 01:36 
 ℹ 09:35:06|stratum  Received new job #ff63903c seed: #1261dfe17d0bf58cb2861ae84734488b target: #0000000112e0be826d694b2e 
 m 09:35:08|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:10|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:12|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 ℹ 09:35:12|stratum  Received new job #76b48990 seed: #1261dfe17d0bf58cb2861ae84734488b target: #0000000112e0be826d694b2e 
 m 09:35:14|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:16|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:18|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:20|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
 m 09:35:22|ethminer Speed 208.73 Mh/s gpu/0 20.36 gpu/1 21.62 gpu/2 21.62 gpu/3 20.57 gpu/4 20.57 gpu/5 20.57 gpu/6 20.57 gpu/7 20.57 gpu/8 20.57 gpu/9 21.72 [A338+0:R0+0:F0] Time: 01:36 
CRITICAL: Tue Feb 27 09:35:25 CET 2018 - GPU Utilization is too low: restarting 3main... 

[bitkoni]

I write the image to flashdisk, insert into mobo and its loading to grub.
How can i start the OS ?

[LuKePicci]

Hello,
When we get a watchdog alert, is there an easy way to determine which GPU created the error? It looks to me that in the example below, the all 10 GPUs are failing at the same time which is not possible.
Do you have any peace of advice?

See for NVRM errors in /var/log/kern.log

[WaveFront]

Hello,
When we get a watchdog alert, is there an easy way to determine which GPU created the error? It looks to me that in the example below, the all 10 GPUs are failing at the same time which is not possible.
Do you have any peace of advice?

See for NVRM errors in /var/log/kern.log

Hi LukePicci,
If I check kern.log approximately at the time of the watchdog error above (Tue Feb 27 09:35:24 CET 2018) I get:

Code:

Feb 27 09:35:03 m1-desktop kernel: [72498.782215] NVRM: Xid (PCI:0000:02:00): 31, Ch 0000001b, engmask 00000101, intr 10000000
Feb 27 09:46:34 m1-desktop kernel: [73190.045754] NVRM: Xid (PCI:0000:0f:00): 31, Ch 0000001b, engmask 00000101, intr 10000000

Does that mean that the GPU that gave the error is on PCI slot 02 (or whatever is mapped to PCI slot 02)?