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Re: AMD Radeon 6490M

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On 04.01.21 04:24, Felix Miata wrote:
> LuKaRo composed on 2021-01-04 03:24 (UTC+0100):
>
> Did you check to see if there is a way in the BIOS to disable the Radeon?
Unfortunately, no, because this is a MacBook, and Apple does not allow such settings
> 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".
I'd be comfortable with blacklisting the NVidia graphics and just using the Intel one for example. I just don't know how to do this. Maybe with some kind of special Xorg config?
> 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.
Thanks for the tip, it was a good read!
> 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
The initramfs does not even work when the amd firmware is installed, e.g. I don't even get the password prompt for my encrypted rootfs which is the first step in the boot procedure. Pressing escape doesn't give any additional information, either.
> 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.

I'm not sure if it got stripped by the mailing list, but both dmesg and Xorg.0.log were included in my previous mail. I'll link them in plain text, hopefully that works :) Xorg.0.log: https://termbin.com/x15x dmesg: https://termbin.com/uc85

Thanks for your help so far! Kind regards,

LuKaRo

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Thread

AMD Radeon 6490M LuKaRo <lists@lrose.de> - 2021-01-04 03:30 +0100
  Re: AMD Radeon 6490M Felix Miata <mrmazda@earthlink.net> - 2021-01-04 04:30 +0100
    Re: AMD Radeon 6490M Felix Miata <mrmazda@earthlink.net> - 2021-01-04 04:30 +0100
      Re: AMD Radeon 6490M LuKaRo <lists@lrose.de> - 2021-01-04 18:00 +0100
        Re: AMD Radeon 6490M Hans <hans.ullrich@loop.de> - 2021-01-04 18:40 +0100
          Re: AMD Radeon 6490M Andrei POPESCU <andreimpopescu@gmail.com> - 2021-01-04 18:50 +0100
            Re: AMD Radeon 6490M Hans <hans.ullrich@loop.de> - 2021-01-04 19:00 +0100
              Re: AMD Radeon 6490M Andrei POPESCU <andreimpopescu@gmail.com> - 2021-01-04 20:50 +0100
                Re: AMD Radeon 6490M Felix Miata <mrmazda@earthlink.net> - 2021-01-04 21:10 +0100
                Re: AMD Radeon 6490M LuKaRo <lists@lrose.de> - 2021-01-07 14:10 +0100
    Re: AMD Radeon 6490M Andrei POPESCU <andreimpopescu@gmail.com> - 2021-01-04 08:50 +0100
    Re: AMD Radeon 6490M LuKaRo <lists@lrose.de> - 2021-01-04 18:00 +0100
      Re: AMD Radeon 6490M deloptes <deloptes@gmail.com> - 2021-01-04 18:30 +0100
      Re: AMD Radeon 6490M Felix Miata <mrmazda@earthlink.net> - 2021-01-04 21:00 +0100

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