[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 2029 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

            Bug ID: 105971
           Summary: DVI port is not detecting connected monitor with
                    4.16.0+ kernel and amdgpu.dc=1 set
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: sass.joel@gmail.com

Created attachment 138731
  --> https://bugs.freedesktop.org/attachment.cgi?id=138731&action=edit
dmesg output from amdgpu.dc=0 switch

Hello. I'm trying to get 4 monitors working on the same desktop. Video card is
a Radeon RX560.

root@nope:/tmp# lsb_release -a
LSB Version:   
core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.4 LTS
Release:        16.04
Codename:       xenial

root@nope:/tmp# uname -a
Linux nope 4.16.0+ #1 SMP Mon Apr 2 15:52:14 CEST 2018 x86_64 x86_64 x86_64
GNU/Linux

With kernel switch amdgpu.dc=1, DVI port doesn't detected connected monitor,
but displayport MST is detected and utilized properly, allowing me to output
video to three monitors from a single displayport.

With kernel switch amdgpu.dc=0, DVI port properly detects connected monitor,
but displayport MST is not detected. Instead, displayport MST acts as a single
output, and video output is mirrored to all three connected monitors.

This appears to be a kernel issue. Kernel was retrieved from git repo
github.com/M-Bab/linux-kernel-amdgpu-binaries

I'm running the AMDGPU.UBUNTU kernel on that repo.

I'll attach dmesg, xrandr and Xorg.0.log output from both kernel switches. 

I'm running amdgpu.dc_log=1 kernel switch for verbose logging.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 3511 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 319 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #1 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138732
  --> https://bugs.freedesktop.org/attachment.cgi?id=138732&action=edit
Xorg.0.log with amdgpu.dc=0

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1313 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 315 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #2 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138733
  --> https://bugs.freedesktop.org/attachment.cgi?id=138733&action=edit
xrandr with amdgpu.dc=0

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1301 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 303 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #3 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138734
  --> https://bugs.freedesktop.org/attachment.cgi?id=138734&action=edit
lshw output

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1265 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 319 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #4 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138735
  --> https://bugs.freedesktop.org/attachment.cgi?id=138735&action=edit
Xorg.0.log with amdgpu.dc=1

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1313 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 328 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #5 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138736
  --> https://bugs.freedesktop.org/attachment.cgi?id=138736&action=edit
dmesg output with amdgpu.dc=1 switch

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1340 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 322 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #6 from Joel Sass <sass.joel@gmail.com> ---
Created attachment 138737
  --> https://bugs.freedesktop.org/attachment.cgi?id=138737&action=edit
xrandr with amdgpu.dc=1 switch

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1322 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 437 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

--- Comment #7 from Joel Sass <sass.joel@gmail.com> ---
A note about the Xorg.0.log with amdgpu.dc=0,

I see that the amdgpu module doesn't appear to be loaded. X came up just fine
without the driver being loaded, and GPU desktop acceleration still worked just
fine with compiz in gnome-flashback.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1285 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 427 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #138731|text/x-log                  |text/plain
          mime type|                            |

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1128 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 105971] DVI port is not detecting connected monitor with 4.16.0+ kernel and amdgpu.dc=1 set

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 827 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=105971

Joel Sass <sass.joel@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #8 from Joel Sass <sass.joel@gmail.com> ---
Update:

looks like the DVI output detection of the monitor has been fixed in
drm-fixes-4.17 from agd5f here:
https://cgit.freedesktop.org/~agd5f/linux/?h=drm-fixes-4.17

had to compile it myself, but works relatively well. When plugging in a new
monitor, the size was not properly detected, but it's better than freezing.

Thanks!

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 2497 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel