Comment 3 for bug 1568429

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Charlie McMackin (charliemac+bugs) wrote : Re: Radeon won't work with KMS enabled

Yes, Catalyst has been the only driver that has been working for me so far. I don't believe the radeon driver was working before either, I remember having a similar problem when I upgraded to 15.10.

Thanks for the debugging tip. However it didn't work. Immediately after running the modprobe command the screens go blank, lose signal input, and then after about 5 seconds the machine reboots. After logging in again, I found that dmesg didn't have a chance to pipe its output to the file either.

Definitely seems to be a bug closer to the kernel / drm