[Bug 75491] New: radeon 0000:05:00.0: Invalid ROM contents (Radeon HD7750 no Monitors connected)

[Bug 75491] New: radeon 0000:05:00.0: Invalid ROM contents (Radeon HD7750 no Monitors connected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

          Priority: medium
            Bug ID: 75491
          Assignee: dri-devel@lists.freedesktop.org
           Summary: radeon 0000:05:00.0: Invalid ROM contents (Radeon
                    HD7750 no Monitors connected)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: freedesktop@donewell.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 94711
  --> https://bugs.freedesktop.org/attachment.cgi?id=94711&action=edit
bios_dump

I've bought a radeon HD 7750 with 4 mini-DP Connectors and use passive hdmi
adapters to connect my 3 Monitors.

kernel version is 3.13.5

on bootup kernel reports:

Feb 25 10:42:32 barfoos24 kernel: radeon 0000:05:00.0: Invalid ROM contents
Feb 25 10:42:32 barfoos24 kernel: ATOM BIOS: C44501

After init of drm the montiors goto black.

After reading a lot i managed to get them working by following kernel params:

radeon.modeset=1 radeon.dpm=1 video=DP-1:1920x1200-24@60D
video=DP-2:1920x1200-24@60D video=DP-3:1920x1200-24@60D
rm_kms_helper.edid_firmware=edid/1920x1200.bin

edid/1920x1200.bin is self compiled edid.

i've attached the dumped bios.

in this configuration the card is working with all 3 monitors, but after
screenlog or a console change the screens remain dark.

the kernel log reads:

Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR* clock
recovery failed
Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR*
displayport link status failed
Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR* clock
recovery failed
Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR*
displayport link status failed
Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR* clock
recovery failed
Feb 25 10:44:01 barfoos24 kernel: [drm:radeon_dp_link_train_cr] *ERROR*
displayport link status failed

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|radeon 0000:05:00.0:        |Radeon HD7750 no Monitors
                   |Invalid ROM contents        |connected
                   |(Radeon HD7750 no Monitors  |
                   |connected)                  |

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
Please attach your xorg log and dmesg output.

You can ignore the "Invalid ROM contents" message, that's due to some pci
subsystem change.  The driver is able to fetch the rom fine.

Are you sure they are passive adapters?  The error messages indicate the driver
thinks they are active adapters.

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #2 from Eric Grüttefien <freedesktop@donewell.de> ---
Created attachment 94755
  --> https://bugs.freedesktop.org/attachment.cgi?id=94755&action=edit
Kernel no force connect

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #3 from Eric Grüttefien <freedesktop@donewell.de> ---
Created attachment 94756
  --> https://bugs.freedesktop.org/attachment.cgi?id=94756&action=edit
kernel force connect

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #4 from Eric Grüttefien <freedesktop@donewell.de> ---
Created attachment 94757
  --> https://bugs.freedesktop.org/attachment.cgi?id=94757&action=edit
Xorg log force connect

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #5 from Eric Grüttefien <freedesktop@donewell.de> ---
I'm sure they are pasive ones. They cost 1 Eur each ;-)

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #6 from Eric Grüttefien <freedesktop@donewell.de> ---
Anything else i can do / try ?

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #7 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #5)
> I'm sure they are pasive ones. They cost 1 Eur each ;-)

Maybe they are too cheap and don't properly connect the ddc wires or pull the
right pins down.  Can you confirm that they actually work with windows or
different hardware?  If they do work, can you attach the same logs but with
debugging enabled?  (add drm.debug=0xff to the kernel command line in grub)

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

--- Comment #8 from Eric Grüttefien <freedesktop@donewell.de> ---
> Maybe they are too cheap and don't properly connect the ddc wires or pull
> the right pins down. 

I've open one cable you seem be right. DDC alias AUX CH+/- seems not to be
connected. 

Cable Adaptor Detect alias Config 1 I' have still to check.

They are passive ones using a NPX/Phillips PTN3361B level shifter.

I will fix the cable and report back.

Thank you very much for the hint.

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[Bug 75491] Radeon HD7750 no Monitors connected

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https://bugs.freedesktop.org/show_bug.cgi?id=75491

Eric Grüttefien <freedesktop@donewell.de> changed:

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

--- Comment #9 from Eric Grüttefien <freedesktop@donewell.de> ---
With DP: aux(p/n) connected to HDMI:DD(C/D) it works as it should be.

Sorry for the noise and thank you for the helping hints.

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