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Trouble with AMD RX480 : how to increase max resolution ?

Greg-seo

Sun Jun 14, 2020 9:38:35 am

Hi,

As a french newsbie, I'm jumping into Linux world with Zorin OS.
Install is ok, all run like a charms except my video card.

RX 480 on display port plugged on a 4k monitor. I can't go higher than 1280x800.

Here is some info

lspci -nnk | grep -i -EA3 "3d|display|vga"

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X] [1002:67df] (rev c7)
Subsystem: ASUSTeK Computer Inc. Ellesmere [Radeon RX 470/480/570/580] [1043:0501]
Kernel driver in use: amdgpu
Kernel modules: amdgpu


xrandr
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 16384 x 16384
DisplayPort-0 connected primary 1280x800+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
1280x800 59.81*
1152x864 59.97
1280x720 60.00 59.94
1024x768 60.00
800x600 60.32
720x480 60.00 59.94
640x480 60.00 59.94
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1 disconnected (normal left inverted right x axis y axis)
DVI-D-0 disconnected (normal left inverted right x axis y axis)


Can someone help me ?

Aravisian

Sun Jun 14, 2020 10:06:45 am

Can you try the instructions outlined in this:
https://askubuntu.com/questions/1075157 ... ion-higher
Please let us know if it works out.

Greg-seo

Tue Jun 16, 2020 8:03:38 am

Thanks Aravisian for your help.

I start a post with this same question 10 day ago. after posting, I restart my computer and I had suddently my Zorin with 4k :) (so I have deleted my post).

But on next restart of my computer, trouble come back so I write this actual post !

In fact I dont understand that happen with my video card cause after restart my computer and without any update : trouble solved by itselft one's again.

For now, I've got 4k with my video card. Hope its holds

Aravisian

Tue Jun 16, 2020 10:57:07 am

Greg-seo wrote:Thanks Aravisian for your help.

I start a post with this same question 10 day ago. after posting, I restart my computer and I had suddently my Zorin with 4k :) (so I have deleted my post).

But on next restart of my computer, trouble come back so I write this actual post !

In fact I dont understand that happen with my video card cause after restart my computer and without any update : trouble solved by itselft one's again.

For now, I've got 4k with my video card. Hope its holds

I hope so, too. Maybe there was an update that went through? I have gotten many updates in the last few weeks, mostly containing a successive climbing of the Kernel as the Zorin Team continues testing each Kernel iteration before release.

Greg-seo

Wed Sep 09, 2020 12:37:27 pm

hi come back to 1280x800 on my 4k monitor after updating Zorin. This thread helped me : https://askubuntu.com/questions/1075157 ... ion-higher

Aravisian

Tue Sep 15, 2020 9:52:05 am

Greg-seo wrote:hi come back to 1280x800 on my 4k monitor after updating Zorin. This thread helped me : https://askubuntu.com/questions/1075157 ... ion-higher

Greg-seo, glad you got it fixed. Thanks for sharing your solution.
Please remember, the forum has moved to https://forum.zorin.com so please join up over there for continued support.