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How to get back my proper display driver settings after (wrongly) installing AMD Catalyst Control Center?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 963 / 2 Years ago, thu, november 25, 2021, 3:29:03

After having this problem, and following this answer, I have installed AMD Catalyst Control Center (fglrx-amdcccle) and after reboot my display was all wrong, stuck to 1280x1024.

I have un-installed it but could not repair it.

Before all this happened, running lspci -nnk | grep -iA2 vga I got:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD]

    nee ATI M24 1P [Radeon Mobility X600] [1002:3150]

Subsystem: Hewlett-Packard Company nx8220 [103c:0934]

Kernel driver in use: radeon

But now i get:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI M24 1P [Radeon Mobility X600] [1002:3150]

    Subsystem: Hewlett-Packard Company nx8220 [103c:0934]

    Kernel modules: radeon, radeonfb

For some reason a radeonfb appears beside radeon as kernel driver in use.

How to go back to the previous state?

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icielight

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2 Years ago

answered 2 Years ago motivengry · Accepted Answer

As suggested in the gertvdijk's answer, I looked at this question: Google Chrome not rendering webpages correctly which initially was supposed to solve my other problem related to Openoffice.
There, I looked at this answer, and took the first two steps from there,

sudo apt-get remove --purge fglrx

sudo apt-get install --reinstall xserver-xorg-video-radeon

which after reboot have restored my LXRandr ability of setting my display.

enter image description here

Now

~$ lspci -nnk | grep -iA2 vga

gives:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI M24 1P [Radeon Mobility X600] [1002:3150]

    Subsystem: Hewlett-Packard Company nx8220 [103c:0934]

    Kernel driver in use: radeon

like before the installation of AMD Catalyst Control Center.

(Also, in this way, my Libreoffice problem mentioned above, which had disappeared when this one here emerged, is back. I welcome the kind readers of this post to consider reading my other question and provide an answer that would not produce this problem here again.)