https://bugs.freedesktop.org/show_bug.cgi?id=104660
Bug ID: 104660 Summary: DC R9 285 dual link DVI modes not shown. Product: DRI Version: DRI git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: adf.lists@gmail.com
Created attachment 136779 --> https://bugs.freedesktop.org/attachment.cgi?id=136779&action=edit dmesg with error
R9 285 Tonga, I see in agd5f 4.17-wip there are commits to do with DVI dual link.
I was hoping "Don't block dual-link DVI modes" would enable 120Hz my monitor supports, which has always worked with without dc.
There is an error in dmesg - don't know if it's related. dmesg and xrandr attached.
[drm:dal_bios_parser_init_cmd_tbl [amdgpu]] *ERROR* Don't have set_dce_clock for v0
https://bugs.freedesktop.org/show_bug.cgi?id=104660
--- Comment #1 from Andy Furniss adf.lists@gmail.com --- Created attachment 136780 --> https://bugs.freedesktop.org/attachment.cgi?id=136780&action=edit xrandr with missing > 60Hz modes
https://bugs.freedesktop.org/show_bug.cgi?id=104660
--- Comment #2 from Harry Wentland harry.wentland@amd.com --- Created attachment 136782 --> https://bugs.freedesktop.org/attachment.cgi?id=136782&action=edit Fix for dual-link DVI modes
The error is unrelated. This patch should fix your dual-link DVI modes. It's hitting the mailing list soon, just took a bit longer than the rest of the DVI patches. Note that we also see issues with non-native modes on one display with this patch, but that's likely a monitor-specific issue.
https://bugs.freedesktop.org/show_bug.cgi?id=104660
--- Comment #3 from Andy Furniss adf.lists@gmail.com --- Thanks, that works.
This is the same with non dc, but is there a reason they are a bit low?
1920x1080 (0x5b) 285.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 137.26KHz v: height 1080 start 1083 end 1088 total 1144 clock 119.98Hz
1920x1080 (0x5c) 260.250MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 125.12KHz v: height 1080 start 1083 end 1088 total 1138 clock 109.95Hz
1920x1080 (0x5d) 235.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 113.22KHz v: height 1080 start 1083 end 1088 total 1133 clock 99.93Hz
I was hoping DC would differ from the old driver in giving exact Hz for these.
https://bugs.freedesktop.org/show_bug.cgi?id=104660
--- Comment #4 from Alex Deucher alexdeucher@gmail.com --- (In reply to Andy Furniss from comment #3)
Thanks, that works.
This is the same with non dc, but is there a reason they are a bit low?
1920x1080 (0x5b) 285.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 137.26KHz v: height 1080 start 1083 end 1088 total 1144 clock 119.98Hz
1920x1080 (0x5c) 260.250MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 125.12KHz v: height 1080 start 1083 end 1088 total 1138 clock 109.95Hz
1920x1080 (0x5d) 235.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 113.22KHz v: height 1080 start 1083 end 1088 total 1133 clock 99.93Hz
I was hoping DC would differ from the old driver in giving exact Hz for these.
Those are the modes from the EDID from your monitor:
CEA extension block Extension version: 1 0 8-byte timing descriptors Detailed mode: Clock 235.500 MHz, 521 mm x 293 mm 1920 1968 2000 2080 hborder 0 1080 1083 1088 1133 vborder 0 +hsync -vsync Detailed mode: Clock 260.250 MHz, 521 mm x 293 mm 1920 1968 2000 2080 hborder 0 1080 1083 1088 1138 vborder 0 +hsync -vsync Detailed mode: Clock 285.500 MHz, 521 mm x 293 mm 1920 1968 2000 2080 hborder 0 1080 1083 1088 1144 vborder 0 +hsync -vsync
https://bugs.freedesktop.org/show_bug.cgi?id=104660
--- Comment #5 from Andy Furniss adf.lists@gmail.com --- Thanks, stupid monitor rather than some rounding then :-)
https://bugs.freedesktop.org/show_bug.cgi?id=104660
Andy Furniss adf.lists@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED
--- Comment #6 from Andy Furniss adf.lists@gmail.com --- Working with latest agd5f kernels
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