I upgraded to Ubuntu 18.04 yesterday, and my first boot was fine. I have a double partition Windows 10 - Ubuntu. After I restarted my PC I selected Ubuntu from GRUB, the loading screen appears, after more or less 3 seconds it started flickering with a period of around 2 seconds (1 sec black, 1 sec Ubuntu loading screen). I waited about 10 minutes then restarted but the problem reappears.
So I restarted and ran in recovery mode.
After doing a
fsck the system boots properly (with 800x600 resolution). If I restart it boots properly (in correct resolution) once. But if I shut down I need to
fsck and restart each time.
I searched around and found that it may be a graphics driver related issue. I tried to update my drivers but under Additional Drivers in Software and Updates I can't find any available additional driver. Then I tried to update GRUB but still no results. I can't wipe out the disk; it would take hours to back up all important data.
$ sudo lshw -C video [sudo] password di lollouno: *-display description: VGA compatible controller product: Carrizo vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 1 bus info: pci@0000:00:01.0 version: ca width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=amdgpu latency=0 resources: irq:40 memory:d0000000-dfffffff memory:f0000000-f07fffff ioport:f000(size=256) memory:feb00000-feb3ffff memory:c0000-dffff
Today I was able to boot. It took about 10 minutes, so finally I am not sure if yesterday it really was impossible to boot or if I did not wait enough.
Anyway help would be appreciated to speed up boot