Is it possible to get the initial info (processor and graphics card types etc) without restarting the Boinc client? It doesn't seem to keep the messages long enough to go back to if the computer's been running a few days. Firstly I don't want to interrupt running tasks, and secondly I want to know what it knows now, not after the restart - specifically which way round it has the two graphics cards, that might change on a restart.

First place to look is client_state.xml which appears to hold the GPU enumeration "for ever" following a restart of BOINC.

Edit to add:
Second place coproc_info.xml which is easier to read

On Windows, learn where stdoutdae.txt is in the data folder.

On Linux, you'll need journalctl.

First place to look is client_state.xml which appears to hold the GPU enumeration "for ever" following a restart of BOINC.

Edit to add:
Second place coproc_info.xml which is easier to read

Thanks, coproc_info.xml contained what I needed. I wanted to make sure the cards were still in the same order. Boinc used to (could be a few years back, earlier version) swap them randomly, or at least put them in reverse order than Windows or anything like GPU-Z did. I only suspected they'd swapped because the little one was running as fast as the big one on certain tasks. But I think that may be because, despite it being slower, it's newer and has other improvements.

Should I be concerned about this at the end of that file? "<warning>No ATI library found.</warning>"

Should I be concerned about this at the end of that file? "<warning>No ATI library found.</warning>"

Only if you have an ATI card and no driver for it.

Should I be concerned about this at the end of that file? "<warning>No ATI library found.</warning>"

Only if you have an ATI card and no driver for it.

That machine has two ATI cards. But they function perfectly in Windows, games, and 5 Boinc projects. Whatever this library is, I assume it's either something outdated, or something only very few projects use. I remember a long time ago, I had to deliberately download an extra bit from ATI, as the standard driver didn't do OpenCL or something.

OK - https://github.com/BOINC/boinc/blob/master/client/gpu_amd.cpp#L131

callib is 'CAL library'. CAL is the first proprietary language used for programming ATI cards, when they were ATI and not AMD. It must be legacy support, in case you want to install a driver and run programs still using that old language - it's been discontinued for several years now. No harm from the legacy check, but no benefit, either.