Re: Optiminer/Zcash v1.6.0 (GPU, Linux, AMD)

I have switched to Linux ( ubuntu 16.04.1) but have been experiencing my screen not being recognized between switching rigs ( plug in hdmi in one rig and plugging back into same gpu I started with on another rig ) also on startup I have seen my screen not be recognized.
Here's what I did:
install ubuntu
Reboot
Sudo apt update
Sudo apt dist-upgrade
Reboot
Sudo install new amd 16.50
Reboot
Run miner, see gains Cool

Move to next rig repeat
Came back to the first rig and screen isn't recognized.
Missing anything?

I know i'm not answering exactly what you expect, but how does that matter ?
Can't you use ssh to admin your rigs ?
Or the issue isn't about administration but rather about the miner not working because the screen is not recognized ?
=> My setup is 100% headless, no fake hdmi or anything and it works like a charm.

Agreed - headless is the way to go. There's an issue with the way xorg works in the new versions of Ubuntu. I have found that installing 3 packages makes it work well.

This is what I do:
install xorg xserver-xorg-legacy xserver-xorg-video-dummy

Edit the config file for xorg-legacy:
/etc/X11/Xwrapper.config

delete the last line:
allowed_users=console

insert at end of file:
allowed_users=anybody
needs_root_rights=yes

then set up the xserver-xorg-video-dummy

There's a bit more to getting the headless fully working in a screen, but this gives you a start. I don't want to keep flogging my build guide, you can probably find a link in a previous post if you want. It took me a while to figure it out, but once you get full headless going it's wonderful.

I tend to get slightly less performance out of the GPU that my monitor is hooked to, although it is a XFX R9 380x vs the rest of the cards in the system are just ASUS R9 380 Strix. If I were to switch it to headless would I gain a little extra performance off of that GPU? I'm not positive the less performance is due to the monitor being hooked to it or if the 380x has less performance but I would think if anything it should be more than the 380.

I agree headless would be the best option, and I will get there. Along with getting miner to start on startup... Miner ran for 4 hours and crashed on 2 rigs overnight Sad

But performance for my 480s is at 300 s/S. So it looks like Linux is the best option for now, and figure in stability.

I'm also making sure I haven't missed anything, like increasing my page file to at least 16 gb like I would do on Windows. Undecided

or use redhat?