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Author Topic: Peppermint 7 - Screen tearing on the ATI open source radeon drivers  (Read 8950 times)

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Offline jjoyceiv

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #15 on: September 07, 2016, 08:50:08 pm »
Bloody incredible, this. Thank you @PCNetSpec!

I'm not a Peppermint user, but I did install a fresh copy of Linux Mint 18 MATE today on a client's old laptop after a family member of his failed to get a working copy of Ubuntu 14.04 on. This old beast has a Mobility Radeon X1600 in it, and it flickered like the devil at native res - until I ran some updates, then it didn't. Then I updated the kernel, and... there it went again. I tried a number of solutions before finding something that worked, and this was a major contributor.

What solved the ridiculous flicker - I can't yet speak to mild tearing, this was considerably worse - was creating 20-radeon.conf without the DRI line - cheers @Bigeouf, this card is about the same vintage as yours so skipping that step saved me some time. I believe disabling 10-amdgpu.conf, which contained:

Code: [Select]
Section  "OutputClass"
     Identifier "AMDgpu"
     MatchDriver "amdgpu"
     Driver "amdgpu"
EndSection

also contributed. Like @Bigeouf, my inxi -F output also listed "ati,radeon" - now, with the flicker gone and fix in place, it only shows "radeon". I don't know for a fact that disabling 10-amdgpu.conf did it, but seeing as this GPU is definitely not supported by amdgpu, my client isn't going to experience any breakage without it.

Offline PCNetSpec

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #16 on: September 08, 2016, 11:36:57 am »
Great stuff, thanks for that jjoyceiv I'll know what to suggest to people with "ati, readeon" next time :)

For completeness is there any chance you can add your
Code: [Select]
inxi -F
output ? .. no worries if you've already given the PC back to your client ;)
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Offline Timo

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #17 on: February 25, 2017, 06:25:00 pm »
This appears to only work for those where
Code: [Select]
inxi -G | grep -i driver
shows the ONLY driver as radeon.

For those people where it shows both ati,radeon I'm working on a solution and will add it when tested.

Works for those where
Code: [Select]
inxi -G | grep -i driver
shows the driver as ati,amdgpu as well.



The GPU tested:
Code: [Select]
~ $ inxi -G
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Fiji [Radeon R9 FURY / NANO Series]
           Display Server: X.Org 1.18.4 drivers: ati,amdgpu (unloaded: fbdev,vesa,radeon)
           Resolution: 2560x1080@59.98hz, 1920x1080@60.00hz
           GLX Renderer: Gallium 0.4 on AMD FIJI (DRM 3.1.0 / 4.4.0-64-generic, LLVM 3.8.0)
           GLX Version: 3.0 Mesa 12.0.6

Offline PCNetSpec

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #18 on: February 25, 2017, 07:21:12 pm »
Thanks for the additional info Timo .. it all helps build the knowledge base :)
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Offline Timo

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #19 on: February 25, 2017, 07:43:30 pm »
We've a little missunderstanding here, I think.

ati,amdgpu works like radeon and doesn't require any extra steps.

Only ati,radeon does require extra steps.


Although the drivername might suggest something different ... But who understands how the naming on AMD/ATI/Radeon actually works, I don't :-\

Offline PCNetSpec

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #20 on: February 25, 2017, 07:46:15 pm »
No I understood you my mate, the fix works without any other steps necessary if inxi reports ati,amdgpu .. which is great to know :)
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Offline Timo

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Re: Peppermint 7 - Screen tearing on the ATI open source radeon drivers
« Reply #21 on: February 25, 2017, 08:03:03 pm »
Ok, thanks for the edit in the first post.

it all helps build the knowledge base :)
Yeah it's always great if you type something in the Searchfunction and get the solution ;)