\[solved\] Need help with cgminer in xubuntu \* miner advice

svennand

Hi.

Just converting all my rigs over to linux since ive tired of all the problems with windows (unstable and such).
But im having difficulty running cgminer

when i type ./cgminer -n i get this error:
error while loading shared libraries: libudev.so.0: cannot open shared object file: no such file or directory

Ive downloaded cgminer 3.1.1 built, and run xubuntu 13.04

followed this tutorial:
[url=http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-linux/]http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-linux/[/url]

Help that will fix my problem will be rewarded 8)

svennand

Woho i fixed it.

if anybody else has this problem.

just do this:

sudo apt-get install libudev1
cd /lib/x86_64-linux-gnu/
ln -s libudev.so.1 libudev.so.0

and done 8)

svennand

hmm another problem.

i get 18khash from my 5830 card (test rig)…
should be getting 250

Kevlar

Well, have you tweaked the cgminer settings? Try adding these command line parameters:

-w 256 -v 1 -I 18 -g 1 -l 1 -T --thread-concurrency 3200

svennand

Hmm

intensity is at 8, if i set to 10 i get around 100khash… but get occationaly hw error, when i set 11 i get lots of hw error… lots of them…

What can be wrong?

heres my settings

export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
./cgminer --scrypt -o 192.168.0.2 -u blabla -p blabla

should be fairly simple…

UKMark

[quote name=“svennand” post=“5897” timestamp=“1369344576”]
Hmm

intensity is at 8, if i set to 10 i get around 100khash… but get occationaly hw error, when i set 11 i get lots of hw error… lots of them…

What can be wrong?

heres my settings

export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
./cgminer --scrypt -o 192.168.0.2 -u blabla -p blabla

should be fairly simple…
[/quote]

Drivers? Missing Libs?

Edit: Also see kanoi’s guide:

https://github.com/kanoi/linux-usb-cgminer/blob/master/linux-usb-cgminer

svennand

hmmm
added a couple of extras, thread-concurrency and worksize, now i get 273khash with intensity 13, 305 if i use intensity 18. no hw error.

Im new to mining with linux, and linux in general, so seems that i need to set these values manual, that cgminer do not do a good job guessing=)

EDIT:
Seems that i needed to set thread-concurrency manualy to 8192 that fixed it, just typing shaders didnt help.

svennand

hmm

anyone have any idea why i cant get my 6970 rig up to the hash i had on windows? now i get around 285khash pr card. it should be 450.

./cgminer --scrypt -thread-concurrency 8192 (also tried with shaders 1536), makes allmost no difference, intensity 16. if i turn it up to 20 i can still not get over 300…

UKMark

[quote name=“svennand” post=“6006” timestamp=“1369402154”]
hmm

anyone have any idea why i cant get my 6970 rig up to the hash i had on windows? now i get around 285khash pr card. it should be 450.

./cgminer --scrypt -thread-concurrency 8192 (also tried with shaders 1536), makes allmost no difference, intensity 16. if i turn it up to 20 i can still not get over 300…
[/quote]

I know I get approx 20kH/s less on Linux per card compared to Windows and this is because of better Driver compatibility and support for Windows by AMD… But nearly 200 difference and I would suspect my first suggestion that I made to you.

svennand

Strange,
followed the exact same recipie as the prevouse rig which gets me 570 on 7970 and 280 on 7850.

Tried changing thread-concurrency with hardly not much impact, unless i set it to 3200 then the hashrate goes higher but i get flooded with hw error.
tried setting -v 1 and -g1
worksize to 256 and adjusted Intensity both up and down.

Im really loving xubuntu on my rigs (remote control and so on), so i really want this to work=)

UKMark

[quote name=“svennand” post=“6028” timestamp=“1369405680”]
Strange,
followed the exact same recipie as the prevouse rig which gets me 570 on 7970 and 280 on 7850.

Tried changing thread-concurrency with hardly not much impact, unless i set it to 3200 then the hashrate goes higher but i get flooded with hw error.
tried setting -v 1 and -g1
worksize to 256 and adjusted Intensity both up and down.

Im really loving xubuntu on my rigs (remote control and so on), so i really want this to work=)
[/quote]

Is 280 normal for a 7850? I’m seeing 420+ off my 6950’s all standard factory clock…

svennand

[quote name=“UKMark” post=“6031” timestamp=“1369406008”]
[quote author=svennand link=topic=766.msg6028#msg6028 date=1369405680]
Strange,
followed the exact same recipie as the prevouse rig which gets me 570 on 7970 and 280 on 7850.

Tried changing thread-concurrency with hardly not much impact, unless i set it to 3200 then the hashrate goes higher but i get flooded with hw error.
tried setting -v 1 and -g1
worksize to 256 and adjusted Intensity both up and down.

Im really loving xubuntu on my rigs (remote control and so on), so i really want this to work=)
[/quote]

Is 280 normal for a 7850? I’m seeing 420+ off my 6950’s all standard factory clock…
[/quote]

i had 250 under windows, on all of my three 7850 (asus sapphire and gigabyte), everything at stock.
This is as far as i know normal as long as you do not do any overclocking I over 13 and so on.

However they use VERY little power. so 250 is pretty decent compared to their power consumption.

Seems that i getting closer now, when i completly removed the thread-concurrency i now get 400khash on each of those 5 cards.
Still not there, but it seems that the run somewhat cooler than they did under windows.

UKMark

[quote name=“svennand” post=“6053” timestamp=“1369408979”]
[quote author=UKMark link=topic=766.msg6031#msg6031 date=1369406008]
[quote author=svennand link=topic=766.msg6028#msg6028 date=1369405680]
Strange,
followed the exact same recipie as the prevouse rig which gets me 570 on 7970 and 280 on 7850.

Tried changing thread-concurrency with hardly not much impact, unless i set it to 3200 then the hashrate goes higher but i get flooded with hw error.
tried setting -v 1 and -g1
worksize to 256 and adjusted Intensity both up and down.

Im really loving xubuntu on my rigs (remote control and so on), so i really want this to work=)
[/quote]

Is 280 normal for a 7850? I’m seeing 420+ off my 6950’s all standard factory clock…
[/quote]

i had 250 under windows, on all of my three 7850 (asus sapphire and gigabyte), everything at stock.
This is as far as i know normal as long as you do not do any overclocking I over 13 and so on.

However they use VERY little power. so 250 is pretty decent compared to their power consumption.

Seems that i getting closer now, when i completly removed the thread-concurrency i now get 400khash on each of those 5 cards.
Still not there, but it seems that the run somewhat cooler than they did under windows.
[/quote]

Yeah I don’t use TC setting either, --shaders is all I use, works well for me.

svennand

i usually only set shaders. but when i did i got only low hash

solasaurus

[quote name=“svennand” post=“5890” timestamp=“1369344038”]
Woho i fixed it.

if anybody else has this problem.

just do this:

sudo apt-get install libudev1
cd /lib/x86_64-linux-gnu/
ln -s libudev.so.1 libudev.so.0

and done 8)
[/quote]

Just wanted to post to say thanks for posting this solution. I followed the same instructions you followed and got stuck at the same point with the same error. This helped me solve the problem and get my cgminer operational. So a thankyou is in order.

svennand

[quote name=“solasaurus” post=“18602” timestamp=“1372490472”]

Just wanted to post to say thanks for posting this solution. I followed the same instructions you followed and got stuck at the same point with the same error. This helped me solve the problem and get my cgminer operational. So a thankyou is in order.
[/quote]

Sweet :)