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AMD driver says unsupported hardware

asked 2014-02-26 08:26:08 -0500

bluestar gravatar image

updated 2014-03-04 07:12:59 -0500

Due to a harddisk error I had to reinstall Fedora 20 Xfce. I'm glad everything other than the problem below works well.

I downloaded the newest AMD Linux beta driver for x64 ( and tried to install it, like I did on the other installation. But this time, the installer says that I have an unsupported graphics card. The "stable" version ( also complains about unsupported graphics card.

I definitely had the beta driver installed and the stable one also worked at some point.

Output of lspci | grep VGA:

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] (rev ff)

I want to install fglrx-drivers because I want to disable the Radeon via aticonfig --px-igpu. Other solutions to deactivate AMD didn't work.

Is there some way to make the install work again? Maybe some config-entry I forgot?

Edit: As I mentioned in a comment below, the output of cat /sys/kernel/debug/vgaswitcheroo/switch

1:DIS: :DynOff:0000:01:00.0

This is after booting without any script that disables something. After echo OFF > /sys/kernel/debug/vgaswitcheroo/switch the output of cat ... is exacly the same as above. So I don't know if that was successful or not.

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answered 2014-02-26 21:02:07 -0500

QuLogic gravatar image

updated 2014-03-05 21:37:09 -0500

This doesn't exactly answer your question, but maybe it will help with the underlying problem.

The latest kernels have dynpm support for radeon cards, and should disable them when not in use. You can check cat /sys/kernel/debug/vgaswitcheroo/switch to see if it's off. If your card isn't supported though, you can do it manually with echo OFF > /sys/kernel/debug/vgaswitcheroo/switch. (You need to be root for both of those operations.)

Edit: Yes, DynOff means the card should turn off dynamically when not in use. You can check powertop on the Device Stats page to confirm that it's using no power.

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This is the second problem I've heard with fglrx/Catalyst and the AMD Radeon HD 7000M series. Hopefully AMD will really support these cards in their next beta. I have a 7000G chip, and it took quite a few months for both Radeon and Catalyst to support it well.

I would definitely do a software update. I think both Radeon and Catalyst work better under a 3.13.x kernel.

passthejoe gravatar imagepassthejoe ( 2014-02-27 11:47:38 -0500 )edit

Thank you for your responses. It is really weird because I installed the driver successfully. My card should be supported then. I'm on Kernel 3.14. I will edit the output of cat /sys/kernel/debug/vgaswitcheroo/switch later in the question.

bluestar gravatar imagebluestar ( 2014-02-27 12:04:49 -0500 )edit

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Asked: 2014-02-26 08:26:08 -0500

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Last updated: Mar 05 '14