Re: AMD Radeon 6490M

[Felix Miata <mrmazda@earthlink.net>]

LuKaRo composed on 2021-01-04 03:24 (UTC+0100):

> Any ideas on how to get graphics output on that machine? I don't even
> need the radeon graphics, the integrated Intel graphics would be okay
> for a start as well. My full Xorg.0.log <https://termbin.com/x15x> and
> my dmesg <https://termbin.com/uc85> are attached here
> <https://termbin.com/x15x> and here <https://termbin.com/uc85>.. Thanks
> a lot in advance for any ideas!

Did you check to see if there is a way in the BIOS to disable the Radeon?

Getting "dual graphics" or "hybrid graphics" going on a laptop is a common
problem. I don't have any, but I see a lot of threads about getting them going.
With Intel and NVidia together, this is called "Optimus".

Your 6490M is a "Terascale" class Radeon, so don't let anything you might read
about "Southern Islands" or "Sea Islands" waste your time.

Start with a read of this driver primer (which applies to all distros, not just
openSUSE), to avoid potential confusion when you see the word "driver":
<https://forums.opensuse.org/showthread.php/541438-AMD-Intel-amp-NVidia-X-graphics-driver-primer>.
You may wish to try a bit of what you find there.

Try hitting escape as soon as the screen goes black. Do you get a stream of text
messages? If yes, do you see any clues? You can make the messages more permanent
by reconfiguring in /etc/default/grub's GRUB_CMDLINE_LINUX_DEFAULT= line to
exclude quiet and changing splash=silent to splash=verbose or omitting it
altogether, possibly needing instead or in addition one of the following:

	noplymouth
	plymouth=0
	plymouth.enable=0

Sending /var/log/Xorg.0.log to http://paste.debian.net/ or http://pastbin.com/ if
it exists, or ~/.local/share/xorg/Xorg.0.log if it exists, will help us help you
if examining it yourself doesn't enable you to find a solution on your own.

Examining output from "sudo journalctl -b" will enable searching for error
messages that don't show up in Xorg.0.log. Grep for "failed" and "error" in dmesg too.

I have Terascale ATI as well, HD 6450 working fine, but not in a laptop or with
dual graphics.
-- 
Evolution as taught in public schools, like religion,
	is based on faith, not on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/