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umlaeute / v4l2loopback

v4l2-loopback device
GNU General Public License v2.0
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Linux 6.8.4 seems to have broken v4l2loopback in several ways. #584

Closed coppice-git closed 7 months ago

coppice-git commented 7 months ago

Fedora 39 has updated to Linux kernel 6.8.4 and this has broken v4l2loopback in several ways: VFL_TYPE_GRABBER has gone. It seems VFL_TYPE_VIDEO should now be used instead, and is a direct replacement. strlcpy() has gone. It looks like strscpy should be used instead, and is a direct replacement. do_gettimeofday has gone. I think ktime_get() is supposed to be used now. setup_timer() has gone. I'm not sure what the replacement for this looks like.

umlaeute commented 7 months ago

Could you please replace the template description in the top posting with the actual description of the problem?

It says:

Please remove these instructions (and other non-relevant information) from your report. If your report looks like a copy of the template, it might get closed immediately.

angelosa commented 7 months ago

F39 version of v4l2loopback is v0.12.7, which seems incompatible (and rather old) with Linux kernel 6.8.4, it will throw deps errors when attempting to modprobe. A workaround is to git clone and compile v4l2loopback, cfr. this tutorial section

umlaeute commented 7 months ago

Ah, so the issue is, that fedora ships a new kernel but an old v4l2loopback (that is known to not work with newer kernels anyhow, eg #570, #574, #575)?

Then I suppose, I can close this issue as "out of date".

(The template asks the module version for a reason... In any case I've updated the bug reporting template, so it becomes easier for people to provide the relevant information)

coppice-git commented 7 months ago

I must have made a typo somewhere and didn't actually update my local repo copy. I just did a fresh checkout, and things work OK now. Thanks.

umlaeute commented 7 months ago

great to know it works