[Bug 104660] DC R9 285 dual link DVI modes not shown.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104660

Andy Furniss  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #6 from Andy Furniss  ---
Working with latest agd5f kernels

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

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https://bugs.freedesktop.org/show_bug.cgi?id=104660

--- Comment #5 from Andy Furniss  ---
Thanks, stupid monitor rather than some rounding then :-)

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104660

--- Comment #4 from Alex Deucher  ---
(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 skew0 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 skew0 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 skew0 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

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104660

--- Comment #3 from Andy Furniss  ---
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 skew0 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 skew0 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 skew0 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.

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

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https://bugs.freedesktop.org/show_bug.cgi?id=104660

--- Comment #2 from Harry Wentland  ---
Created attachment 136782
  --> https://bugs.freedesktop.org/attachment.cgi?id=136782=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.

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104660

--- Comment #1 from Andy Furniss  ---
Created attachment 136780
  --> https://bugs.freedesktop.org/attachment.cgi?id=136780=edit
xrandr with missing > 60Hz modes

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[Bug 104660] DC R9 285 dual link DVI modes not shown.

[bugzilla-daemon]

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.li...@gmail.com

Created attachment 136779
  --> https://bugs.freedesktop.org/attachment.cgi?id=136779=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

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