You have been subscribed to a public bug:
After recent package upgrade on Ubuntu Xenial Xerus 16.04 monitor stops
receiving signal in a moment when login screen should appear. I still heard a
sound of OS loaded (drums). I'm using AMD A6-3650 APU with Radeon(tm) HD
Graphics × 4. Launching OS via safe mode works fine with video provided by
"Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)".
Version of xserver-xorg-video-ati:
1:7.7.0-1 amd64
Also:
- Purge and reinstalling xserver-xorg-video-ati package not helping.
- Booting from "Live USB" with Ubuntu 16.04 beta2 results in same effect after
choosing "Try Ubuntu" option.
Workaround:
- Install Ubuntu 15.10 or earlier.
** Affects: xorg (Ubuntu)
Importance: Low
Status: Incomplete
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No video signal after OS load/APU Radeon 6530
https://bugs.launchpad.net/bugs/1568243
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seeded packages, which is subscribed to xorg in Ubuntu.
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