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#1 2019-01-06 18:32:52

elfroggio
Member
Registered: 2019-01-06
Posts: 5

radeon, amdgpu and 2 screens

I got a new MSI radeon 570 with 8gb (I used to have an nvidia 650ti) with 2 1080p 23" monitors (LG & ASUS: bought at different times).

When I boot I get the 2 screens with the grub menu on both screens.

As soon as I press enter or select whatever, one of the screen gets disconnected and I can't reactivate it.

$ cat /etc/default/grub | grep -ve ^#
GRUB_DEFAULT=saved
GRUB_TIMEOUT=10
GRUB_TIMEOUT_STYLE='menu'
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 resume=UUID=42767d47-412f-461e-9eac-f17146164b0d"
GRUB_CMDLINE_LINUX=""
GRUB_SAVEDEFAULT=true
GRUB_PRELOAD_MODULES="part_gpt part_msdos"
GRUB_TERMINAL_INPUT=console
GRUB_GFXMODE=auto
GRUB_GFXPAYLOAD_LINUX=keep
GRUB_DISABLE_RECOVERY=true
GRUB_COLOR_NORMAL="light-gray/black"
GRUB_COLOR_HIGHLIGHT="green/black"

I have tried 4.14.90, 4.19.13, 4.20.0: it's the same thing.

I can't reactivate the second screen:

$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   1920x1080     60.00*+
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      60.00  
   1280x800      60.00  
   1152x864      75.00  
   1280x720      60.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
   720x400       70.08  
DVI-D-0 disconnected (normal left inverted right x axis y axis)
$xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x5a cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 6 outputs: 5 associated providers: 0 name:Radeon RX 570 Series @ pci:0000:01:00.0

Something in the boot process deactivates the 2nd screen. It happens immediately after the grub menu.

I have tried: amdgpu.dc=1 amdgpu.dpm=0 as command line parameters without success.

Any suggestion on what to do?

Thanks

Syv

Last edited by elfroggio (2019-01-06 18:36:11)

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#2 2019-01-06 19:31:10

Ropid
Member
Registered: 2015-03-09
Posts: 1,069

Re: radeon, amdgpu and 2 screens

What about "amdgpu.dc=0" on the kernel command line? Did you try that as well? You only mention "amdgpu.dc=1" which is the default setting.

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#3 2019-01-06 19:46:37

elfroggio
Member
Registered: 2019-01-06
Posts: 5

Re: radeon, amdgpu and 2 screens

Ropid wrote:

What about "amdgpu.dc=0" on the kernel command line? Did you try that as well? You only mention "amdgpu.dc=1" which is the default setting.

I have already tried amdgpu.dc=0. Same results. The 2nd monitor is disconnected according xrandr.

Thanks

Syv

Last edited by elfroggio (2019-01-06 19:48:33)

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#4 2019-01-06 19:50:40

Ropid
Member
Registered: 2015-03-09
Posts: 1,069

Re: radeon, amdgpu and 2 screens

Do you see something interesting in the Xorg log file or the journal?

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#5 2019-01-06 19:54:05

loqs
Member
Registered: 2014-03-06
Posts: 17,195

Re: radeon, amdgpu and 2 screens

Please post the contents of Xorg.log and the output of dmesg.

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#6 2019-01-06 20:55:24

elfroggio
Member
Registered: 2019-01-06
Posts: 5

Re: radeon, amdgpu and 2 screens

Ropid wrote:

Do you see something interesting in the Xorg log file or the journal?

No

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#7 2019-01-06 20:57:30

elfroggio
Member
Registered: 2019-01-06
Posts: 5

Re: radeon, amdgpu and 2 screens

loqs wrote:

Please post the contents of Xorg.log and the output of dmesg.

dmesg: https://drive.google.com/file/d/1YwsAJW … sp=sharing

and

xlog.0.log https://drive.google.com/file/d/1WIYBli … sp=sharing

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#8 2019-01-07 12:02:29

Lone_Wolf
Member
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 11,868

Re: radeon, amdgpu and 2 screens

[    17.393] (II) AMDGPU(0): glamor X acceleration enabled on Radeon RX 570 Series (POLARIS10, DRM 3.27.0, 4.20.0-1-MANJARO, LLVM 7.0.0)
[    1.838385] usb usb1: Manufacturer: Linux 4.20.0-1-MANJARO ehci_hcd

If you have both arch linux and manjaro installed, post logs from an arch linux boot.
Incase you only have manjaro, ask on their forums.


Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.


(A works at time B)  && (time C > time B ) ≠  (A works at time C)

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