[Bug 80531] New: 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

[Bug 80531] New: 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

          Priority: medium
            Bug ID: 80531
          Assignee: dri-devel@lists.freedesktop.org
           Summary: 3.16-rc2 hdmi output resolution out of range Cape
                    Verde PRO [Radeon HD 7750]
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: fredrik@obra.se
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 101759
  --> https://bugs.freedesktop.org/attachment.cgi?id=101759&action=edit
dmesg with drm.debug=1

With 3.16-rc2 my tripple screen setup breaks. 

DisplayPort-0 connected 1920x1200 <- ok
HDMI-0 connected 1920x1080 <- (tv) resolution out of range
DVI-0 connected 1680x1050 <- ok

All screens work during bootup before X starts.
ddx driver 7.3.0.

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #1 from fredrik@obra.se ---
Created attachment 101760
  --> https://bugs.freedesktop.org/attachment.cgi?id=101760&action=edit
Xorg log

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #2 from Alex Deucher <agd5f@yahoo.com> ---
Can you attach the dmesg with drm.debug=1 before you start X?  All the
important information is cut off.  E.g., boot into single user mode (append 1
to the kernel command line in grub).

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #3 from fredrik@obra.se ---
Created attachment 101762
  --> https://bugs.freedesktop.org/attachment.cgi?id=101762&action=edit
proper kernel-log

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #4 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 101763
  --> https://bugs.freedesktop.org/attachment.cgi?id=101763&action=edit
limit bpc to 10

Does this patch help?

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #5 from fredrik@obra.se ---
Not really. Now i get a "no signal" error from my TV.

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #101763|0                           |1
        is obsolete|                            |

--- Comment #6 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 101773
  --> https://bugs.freedesktop.org/attachment.cgi?id=101773&action=edit
testing patch

Does this patch help?

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #7 from fredrik@obra.se ---
No, still no signal

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #101773|0                           |1
        is obsolete|                            |

--- Comment #8 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 101866
  --> https://bugs.freedesktop.org/attachment.cgi?id=101866&action=edit
testing patch

Does this help?  Can you also attach a copy of your vbios?  To get a copy of
your vbios:

(as root)
(use lspci to get the bus id)
cd /sys/bus/pci/devices/<pci bus id>
echo 1 > rom
cat rom > /tmp/vbios.rom
echo 0 > rom

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #9 from fredrik@obra.se ---
Created attachment 101887
  --> https://bugs.freedesktop.org/attachment.cgi?id=101887&action=edit
vbios.rom

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #10 from fredrik@obra.se ---
I applied the latest patch on a vanilla source-tree and i still get no signal.

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #11 from fredrik@obra.se ---
(In reply to comment #10)
> I applied the latest patch on a vanilla source-tree and i still get no
> signal.

Correction - I get a "resolution out of range" with the latest patch

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #12 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 102075
  --> https://bugs.freedesktop.org/attachment.cgi?id=102075&action=edit
add deep color module option

This patch disables the deep color support by default which should resolve your
issue.  You can set radeon.deep_color=1 on the kernel command line in grub to
re-enable it.  Hopefully we can resolve this properly for 3.17 and enable deep
color by default.

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[Bug 80531] 3.16-rc2 hdmi output resolution out of range Cape Verde PRO [Radeon HD 7750]

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https://bugs.freedesktop.org/show_bug.cgi?id=80531

--- Comment #13 from fredrik@obra.se ---
(In reply to comment #12)
> Created attachment 102075 [details] [review]
> add deep color module option
> 
> This patch disables the deep color support by default which should resolve
> your issue.  You can set radeon.deep_color=1 on the kernel command line in
> grub to re-enable it.  Hopefully we can resolve this properly for 3.17 and
> enable deep color by default.

Indeed it does. I've tested with 3.16-rc4 and all is well again. Sorry for the
delayed reply. If I can be useful in further testing please let me know.
Thanks.

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Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #14 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/507.

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