Glad to hear it doesn't seem to happen with the radeon driver.
modesetting driver issues can be filed here:
https://gitlab.freedesktop.org/xorg/xserver/issues/new
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(In reply to Avamander from comment #13)
> Good to know. So I can re-enable it?
You haven't actually disabled it yet, or the radeon driver wouldn't be
working. But yeah, better make sure it won't actually get disabled.
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The Xorg log file is still from the modesetting driver, not the radeon
one. Also, it doesn't contain the failure lines. Make sure you attach
the information corresponding to the problem. You may need to get the
Xorg.*.log.old file.
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(In reply to Michel Dänzer from comment #11)
> > and installing the `xserver-xorg-video-radeon` on Ubuntu 19.04.
>
> The radeon driver should be used automatically if xserver-xorg-video-ati is
> installed as well, [...]
Never mind, just installing xserver-xorg-video-radeon s
You're using the Xorg modesetting driver, not the xf86-video-ati radeon
driver. Does the problem also occur with the latter? If yes, please
attach the corresponding Xorg log file and output of dmesg.
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