radeonsi/KMS: Displayport mode detected incorrectly
Submitted by Ralf-Peter Rohbeck
Assigned to xf86-video-ati maintainers
Description
Created attachment 90013
Xorg.0.log
The mode on my (cheap Korean) 1440p monitors on DP outputs (via DP->DVI converters) is detected incorrectly.
xrandr -q displays
DisplayPort-0 connected 1024x768+2560+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
DisplayPort-1 connected 1024x768+3584+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
but since they are single frequency monitors they remain blank.
I can set the correct mode with
xrandr --addmode DisplayPort-0 2560x1440
xrandr --addmode DisplayPort-1 2560x1440
xrandr --output DisplayPort-0 --mode 2560x1440 --output DisplayPort-1 --mode 2560x1440
(details like --rotate and --pos left out) and everything seems to work correctly.
This has happened for a while, at least since I started playing around with radeonsi in March, but it was all hand-built. Now I tried Kubuntu trusty (yay, radeonsi and glamoregl out of the box) and the issue is still around.
I run 4 monitors on a 7850:
1920x1080 on HDMI (Acer S273HL)
2560x1440 on DVI-0 (Achieva Shimian)
2560x1440 on DP-0 (QNIX QX2700)
2560x1440 on DP-1 (QNIX QX2700)
The HDMI and DVI-0 outputs are handled correctly.
The two monitors on the DisplayPorts are connected via Accell B087B-007B. I had trouble with the BIOS setting the wrong mode on those two monitors, but since I updated the firmware on the adapters (http://www.accellcables.com/displayport-fw-update.html#q4) those problems are gone. Now everything is correct HW-wise I think.
$ uname -a
Linux ws 3.12.0-4-generic #12-Ubuntu SMP Tue Nov 26 22:38:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu Trusty Tahr (development branch)"
dpkg-query -l xserver-xorg-video-radeon *glamor*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-====================================-=======================-=======================-=============================================================================
ii libglamor0:amd64 0.5.1-0ubuntu7 amd64 shared graphics acceleration library based on OpenGL
ii xserver-xorg-glamoregl:amd64 0.5.1-0ubuntu7 amd64 X.Org X server -- graphics acceleration module based on OpenGL
ii xserver-xorg-video-radeon 1:7.2.0-0ubuntu10 amd64 X.Org X server -- AMD/ATI Radeon display driver
cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.12.0-4-generic root=UUID=f034f2ef-eaad-40af-8530-83f3b4691b6d ro rootflags=subvol=@ drm.debug=4 log_buf_len=10M radeon.dpm=1 sysrq_always_enabled
The attached log files are from the running system, without setting the monitor modes manually.
Attachment 90013, "Xorg.0.log":
Xorg.0.log