I have a laptop with muxless graphics (Intel HD 4000 and AMD radeon HD 7730m), and today I tried to install Ubuntu 16.04 LTS. The installation went fine, I was able to boot my computer and I updated the software using the software updater. The next time I was trying to boot, it just stuck on purple screen. I tried booting up again and then I saw the recovering journal screen, and afterwards many radeon errors. I saw clearly this one: [Radeon]: failed testing ib on ring 7 .
Every time I boot my computer once, it stucks at purple screen, but if I boot it again it shows some radeon errors and boot up normally.
That's very annoying to boot up the computer twice, so I searched for a solution. Fglrx is not an option since it does not support ubuntu 16.04. Tried nomodeset, nolapic, noapic, acpi=off. All with no success. Even disabling quiet splash shows nothing than a purple screen. Tried to access tty with no success and tried booting with upstart (thought it will change something...)
I wanted to ask if muxless switchable cards are even supported by Ubuntu 16.04 LTS and how can I fix my problem? I couldn't find an answer anywhere, and if it is not supported, then how it is LTS release if it doesn't even support many graphic cards.
~/.xsession-errors
file and a second link with the contents of~/.xsession-errors.old
file. Provide also a third link for/var/log/Xorg.0.log
and a fourth for/var/log/Xorg.0.log.old
. Also provide a 5th link with the output ofinxi -SMCGxxx
for more system info.