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Ubuntu 19.04 (disco) reached end-of-life on January 23, 2020.
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The fault returned and I swapped out monitor/pc with other units to
narrow down the fault to the monitor. A new monitor has fixed the
problem of losing the screen after 3 seconds or so.
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01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM] [1002:6779]
Subsystem: ASUSTeK Computer Inc. Caicos [Radeon HD 6450/7450/8450 / R5
230 OEM] [1043:03da]
Kernel driver in use: radeon
Kernel modul
I have recovered my system by going into recovery mode from grub.
I then reset the graphics to generic. It took a few attempts to do the
same thing before the graphics held up on the monitor as per normal
usage. I then booted into Ubuntu Desktop, shut down, restarted and all
was well.
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