Okay, a little code inspection leads to one of these two function calls
failing at line 3062:
if (crtc == ref_crtc) {
if (drmmode_page_flip_target_absolute(pRADEONEnt,
drmmode_crtc,
fb->handle,
flip_flags,
drm_queue_seq,
target_msc) != 0)
goto flip_error;
} else {
if (drmmode_page_flip_target_relative(pRADEONEnt,
drmmode_crtc,
fb->handle,
flip_flags,
drm_queue_seq, 0)
!= 0)
goto flip_error;
}
Next step is gdb attach and setting a break point.
Now, I'm *not* a video driver guru, so, at some point, I'll need
somebody that's in this code regularly to take a look. Thanks. (Or,
maybe I'll get luckly and find a simply error... ;-) )
--
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which is subscribed to xserver-xorg-video-ati-hwe-16.04 in Ubuntu.
https://bugs.launchpad.net/bugs/1750393
Title:
Blank screen with only mouse pointer after mesa driver update; display
does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows
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https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati-hwe-16.04/+bug/1750393/+subscriptions
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