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I am trying to mine ethereum with an ancient laptop just for fun, but I can't get it running. I get this error:

ethminer 0.19.0-alpha.0
Build: linux/release/gnu


No OpenCL platforms found
Error: No usable mining devices found

Here's the setup:

GPU: AMD Radeon HD 3870 x2
OS: ubuntu server 20.04
Miner: ethminer 0.19.0-alpha-0

Running this command...

sudo lshw -c video | grep driver

gives this:

configuration: driver=radeon latency=0

What might be the problem? Is the 20.04 kernel incompatible with the drivers? Is everything too old?

Sir Rubberduck
  • 165
  • You didn't provide specifics as to which kernel stack you're using with your 20.04. Ubuntu LTS releases offer two kernel stack choices (selected at install time, or by ISO used to install; not including the OEM kernel stacks). Your paste excluded that detail b/c of edits. Are you using the older (GA) or newer (HWE) kernel stack choice? Did you try the other choice? – guiverc Jan 18 '22 at 05:37
  • Thank you for the reply. I wasn't even aware this was a thing. I am not that versed in Linux. I will try to find the info and reply. – Sir Rubberduck Jan 18 '22 at 05:43
  • uname -r will tell you the running kernel; the GA stack will be 5.4 for the life of the product, HWE causes it to follow the non-LTS; ie. 20.04.2 was 5.8 (20.10); 20.04.3 was 5.11 (21.04), 20.04.4 is 5.13 etc.. before settling on the GA stack from the next LTS https://wiki.ubuntu.com/Kernel/LTSEnablementStack (OEM allow further kernels but installation decide that itself; you don't choose that). – guiverc Jan 18 '22 at 05:45
  • uname -r displayed this 5.4.0-94-generic. I don't know how to use this information to make the GPUs work. – Sir Rubberduck Jan 18 '22 at 05:56
  • You're using the GA kernel stack; ie. the most stable but also the oldest.. Your video 'drivers' (drivers are actually kernel modules) are thus the older choice available for 20.04. Prior link provided details on the kernel stack choices; including installing the other stack, on most machines you can have both installed without issue, but also told you how to remove other stack too if desired (ie. you can try, then remove unwanted option if deemed necessary). – guiverc Jan 18 '22 at 06:16

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