[Bug 72785] bfgminer --scrypt on 7xxx+

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Comment # 39 on bug 72785 from
(In reply to Linux User from comment #36)
> P.P.S. and what about better fan/intensity control?

See bug 73338.


(In reply to Linux User from comment #38)
> P.S. also there is another silly issue. If I just install Ubuntu and run
> bfgminer on multi-GPU setup within X session, it would only see 1st GPU
> (where X server running). Remaining GPUs are not detected. Fix is to either
> run bfgminer as root (extremely unsafe!!!) or create new user and make
> "video" it's primary group. The user who installs Ubuntu is a member of
> "video" group, but "video" is his secondary group, which is very common.
> Somehow, kernel seems to disregard permissions in such case and would issue
> -EPERM on certain syscall, making bfgminer unable to find GPUs except one
> used by X. Generally it means that user can't use more than 1 GPU unless he
> is either root (very dangerous!) or video is his primary group (inconvenient
> and uncommon). I believe it is a bug and I should file it? Since I fail to
> understand how average Joe would be able to use some OpenCL program in
> multi-GPU setup and get it working "by default" on all available GPUs. I
> guess I should file it as new bug? Is it kernel issue or MESA, etc?

You should report this to Ubuntu.


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