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drizzt
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Joined: 21 Jul 2002
Posts: 428
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 Posted: Sat Dec 09, 2017 10:53 am Post subject: amdgpu dc Kernel 4.15-rc hdmi 2.0 |
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Hello,
anyone got amdgpu dc in kernel 4.15-rc working with hdmi ?
I can not get beyond 3480x2160x30Hz.
My hardware:
RX460 - 4GB
iiyama G-Master GB2888UHSU
I compiled all amdgpu parts into kernel and included all the firmware parts as well as installing amdgpu driver:
| Code: | | CONFIG_EXTRA_FIRMWARE="amdgpu/polaris11_ce.bin amdgpu/polaris11_mc.bin amdgpu/polaris11_me.bin amdgpu/polaris11_mec2.bin amdgpu/polaris11_mec.bin amdgpu/polaris11_pfp.bin amdgpu/polaris11_rlc.bin amdgpu/polaris11_sdma1.bin amdgpu/polaris11_sdma.bin amdgpu/polaris11_smc.bin amdgpu/polaris11_smc_sk.bin amdgpu/polaris11_uvd.bin amdgpu/polaris11_vce.bin amdgpu/polaris11_pfp_2.bin amdgpu/polaris11_me_2.bin amdgpu/polaris11_ce_2.bin amdgpu/polaris11_mec_2.bin amdgpu/polaris11_mec2_2.bin" |
| Code: | CONFIG_DRM_AMDGPU=y
CONFIG_DRM_AMDGPU_SI=y
CONFIG_DRM_AMDGPU_CIK=y
CONFIG_DRM_AMDGPU_USERPTR=y
CONFIG_DRM_AMDGPU_GART_DEBUGFS=y |
| Code: | cat /etc/portage/make.conf | grep VIDEO
VIDEO_CARDS="amdgpu radeonsi radeon"
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| Code: | * x11-drivers/xf86-video-amdgpu
Latest version available: 1.4.0
Latest version installed: 1.4.0
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Displayport is wroking fine.
To rule out any cabling/hardware issue I tested windows and got 3480x2160x60Hz over hdmi as well as with xbox one x.
Anyone any idea whats going on ?
P.S. Passing amdgpu.dc=1 as kernel parameter does not help as well.
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54237
Location: 56N 3W
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| Posted: Sat Dec 09, 2017 11:38 am Post subject: |
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drizzt,
Not all HDMI ports are created equal. It appears that you have a mix of HDMI ver 1 and HDMI ver 2 ports on the display.
Only the port ... | Quote: | | 16 HDMI Connector (HDMI-1 4K 60p) |
is HDMI ver 2.
HDMI ver 1 maxs out at 3480x2160x30Hz.
I have the same graphics card as you but I don't have a 4k display yet.
The DisplayPort Connector will be quite happy with 3480x2160x60Hz too.
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NeddySeagoon
Computer users fall into two groups:-
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drizzt
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Joined: 21 Jul 2002
Posts: 428
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| Posted: Sat Dec 09, 2017 1:38 pm Post subject: |
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Neddy,
I only have 1xDP, 1xHDMI and 1xDVI on my graphics card and the exact configuration (cabling, ports, etc) works fine with windows.
| Code: | xrandr
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
DisplayPort-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 621mm x 341mm
3840x2160 60.00*+ 60.00 59.94
1920x2160 60.00
2560x1440 59.95
2048x1152 60.00
1920x1200 59.88
1920x1080 60.00 59.94
1600x1200 60.00
1680x1050 59.95
1600x900 60.00
1280x1024 60.02
1440x900 60.00
1280x800 59.81
1280x720 60.00 59.94
1024x768 60.00
800x600 60.32
720x480 60.00 59.94
640x480 60.00 59.94
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
DVI-D-0 disconnected (normal left inverted right x axis y axis)
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Is the linux driver behaving different here ? Is there a way to verify that behaviour ?
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54237
Location: 56N 3W
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| Posted: Sat Dec 09, 2017 1:52 pm Post subject: |
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drizzt,
The graphics card end is HDMI-2. That's OK.
Your display has a mix of HDM!-1 and HDMI-2. You must choose the HDMI-2 port that end too.
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NeddySeagoon
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drizzt
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Joined: 21 Jul 2002
Posts: 428
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| Posted: Sat Dec 09, 2017 1:56 pm Post subject: |
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As I said
| Quote: | | I only have 1xDP, 1xHDMI and 1xDVI on my graphics card and the exact configuration (cabling, ports, etc) works fine with windows. |
I also plugged the pc end of the hdmi cable into xbox one x and this works fine too. Only my linux box does not want to show 60Hz over hdmi 
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NeddySeagoon
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| Posted: Sat Dec 09, 2017 2:02 pm Post subject: |
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drizzt,
Please test all the HDMI inputs on your display.
You will need to restart X each time.
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NeddySeagoon
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drizzt
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Joined: 21 Jul 2002
Posts: 428
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| Posted: Sat Dec 09, 2017 3:43 pm Post subject: |
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Neddy,
here are the results:
Monitor Input HDMI1: Linux (3840x2160@30Hz), Win (3840x2160@60Hz), Xbox One X (3840x2160@60Hz)
Monitor Input HDMI2: Linux (3840x2160@30Hz), Win (3840x2160@30Hz), Xbox One X (3840x2160@30Hz)
Monitor Input HDMI3: Linux (3840x2160@30Hz), Win (3840x2160@30Hz), Xbox One X (3840x2160@30Hz)
Monitor Input DisplayPort: Linux (3840x2160@60Hz), Win (3840x2160@60Hz), Xbox One X (n/a)
Nothing changed, HDMI 2.0 still not detected/working
P.S. Workstation was shutdown before each input change. Always the same cable was used except for DP of course.
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drizzt
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Joined: 21 Jul 2002
Posts: 428
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| Posted: Sat Dec 30, 2017 9:31 am Post subject: |
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Opened a bug request with freedesktop: https://bugs.freedesktop.org/show_bug.cgi?id=104412#c5
Let's see what happens next...
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sand1234
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Joined: 14 Jan 2018
Posts: 4
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| Posted: Wed Jan 31, 2018 2:16 am Post subject: |
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| @drizzt I have the same graphic card and could not get sound via both Display Port and HDMI with kernel 4.14.15. Does it work for you? |
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drizzt
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Joined: 21 Jul 2002
Posts: 428
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| Posted: Wed Jan 31, 2018 6:20 pm Post subject: |
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Well,,
you need kernel-4.15(not 4.14.15 !) for audio to work with these graphic cards. I did not test it extensively but since kernel 4.15-rc1 I have a hdmi audio device showing up in my mixer.
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thumper
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Joined: 06 Dec 2002
Posts: 552
Location: Venice FL
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| Posted: Tue Feb 06, 2018 2:20 am Post subject: |
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Its working for me on 4.15.1-gentoo with an MSI RX480.
Also needed to add to the kernel command line: amdgpu.dc=1
| Code: | # systool -vm amdgpu | grep dc
dc = "1" |
| Code: | $ xrandr
Screen 0: minimum 320 x 200, current 3840 x 2160, 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)
HDMI-A-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
3840x2160 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98
4096x2160 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98
1920x1200 60.00
1920x1080 60.00 50.00 59.94 30.00 25.00 24.00 29.97 23.98
1600x1200 60.00
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.90
1366x768 59.79
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
HDMI-A-1 disconnected (normal left inverted right x axis y axis)
DVI-D-0 disconnected (normal left inverted right x axis y axis) |
George |
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