HDMI output on Radeon HD 3200 does not work

Bug #289177 reported by Alex Wauck on 2008-10-25
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xserver-xorg-video-ati (Fedora)
Won't Fix
xserver-xorg-video-ati (Ubuntu)

Bug Description

Binary package hint: xserver-xorg-video-ati

When booting from the LiveCD, my monitor ceases to receive a signal after X starts. If I switch to a VT, the monitor gets a signal again. The monitor is attached to the card with a DVI-to-HDMI cable, and it works fine with fglrx. I first noticed this problem under Fedora (and filed a bug report: https://bugzilla.redhat.com/show_bug.cgi?id=461413). The radeonhd driver in Fedora works and properly activates the HDMI port, but the radeonhd in Ubuntu does not recognize the chipset and X exits with an error. I will attach Ubuntu X logs to this bug.

Description of problem:

Trying to install Fedora 9 from the latest (as of 2009-09-07) Live CD.

The motherboard is an ABIT A-S78H with integrated ATI Radeon HD 3200 (this one: https://support.ati.com/ics/support/KBList.asp?folderID=11016). That motherboard has a VGA and HDMI connector.

Booting from the Live CD yields the following messages in text mode:

  Aperture beyond 4 GByte - Ignoring
  Unable to find persistent overlay - using temporary

The boot process then proceeds with video signal on both VGA and HDMI connectors. Howwever, after

  Starting udev: [OK]

the video signal on HDMI is lost and only VGA still provides output.

Boot continues. Using "show details" on can see to the message

  Starting cups:

At which point VGA goes away too.

The BIOS has the following config:

  Internal Graphics Mode: UMA (other would be "disabled", not good)
    UMA Frame Buffer Size: Auto
    Frame Buffer Location: Below 4G
    IGX Engine Clock Override: Disabled

How reproducible:


Ouch. For "HDMI" above, read "DVI1". I'm getting old.

Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

Please attach your X server config file (/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below.

It is possible, that the logs might be in /tmp instead.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.

I have a similar problem with the same video chipset. If I start X with VGA connected but not HDMI, everything works fine (except that I would rather not use VGA). If I start X with HDMI connected but not VGA, then I get nothing. The monitor doesn't even get a signal. If I use the radeonhd driver instead of radeon, HDMI works. Also, fglrx works fine under Ubuntu. So, this would appear to be a bug in the radeon driver. In my case, the HDMI connection is a HDMI-to-DVI cable connected to the DVI port of my monitor. I will attach my X logs to this bug.

Created attachment 320881
X log when starting X with only VGA

Created attachment 320882
X log when starting X with only HDMI

Created attachment 320883
X log when starting X with both VGA and HDMI

It looks like I didn't read the initial bug report carefully enough. I am running Rawhide, not Fedora 9.

Original Poster here. My ABIT motherboard seems to be dead as dead. I will replace it but by something different, so no X server logs are available.

Sorry about that.

Since there are insufficient details provided in this report for us to investigate the issue further, and we have not received feedback to the information we have requested above, we have to close this bug as INSUFFICIENT_DATA.

What about the logs I provided? Since my problem is in Rawhide (and it's not quite the same), should I open a new bug for it?

I think we can recycle -- saving some electrons is good :-)

The same problem occurs with Ubuntu 8.10 RC. So, judging by that and the contents of the X logs, it looks like the root of the problem is that activating the HDMI (DVI) output on the Radeon HD 3200 is different than on the other cards, and the radeon driver thinks it knows how to activate it, but actually does not. I find that very interesting, since it is precisely this sort of thing that AtomBIOS was supposed to prevent. For whatever reason, the radeonhd driver knows how to activate the output, so there may be some simple change that will fix the radeon driver. I'll take a look at the sources that Ubuntu is using and try to see if a solution jumps out at me. I'm not a driver developer, so no promises.

It looks to me like radeonhd is using the same encoder mode for both DVI and HDMI. I'll try fiddling with the code and see if I can fix it. Since the Radeon HD 3200 is the only non-antique ATI card I have access to, I can't guarantee that any fix I come up with doesn't break other cards.

I "fixed" this bug in Ubuntu (bug report: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/289177) by replacing all instances of ATOM_ENCODER_MODE_HDMI with ATOM_ENCODER_MODE_DVI. I have no idea what other effects that will have.

Alex Wauck (awauck) wrote :

I "fixed" this bug by replacing all instances of ATOM_ENCODER_MODE_HDMI with ATOM_ENCODER_MODE_DVI. I have no idea what other effects that will have.

Changed in xserver-xorg-video-ati:
status: Unknown → In Progress
Alex Wauck (awauck) wrote :

I suppose I should explain why I did that. I looked at the radeonhd source, and it doesn't seem to treat HDMI and DVI differently when setting encoder mode. I guess if we want to support HDCP, we will need to use ATOM_ENCODER_MODE_HDMI, but for now we can probably use ATOM_ENCODER_MODE_DVI. As I said in the Fedora bug, I am not a driver dev, so I don't know if my change breaks anything.

Bryce Harrington (bryce) on 2008-11-04
Changed in xserver-xorg-video-ati:
status: New → Confirmed
assignee: nobody → bryceharrington

This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.

More information and reason for this action is here:

Bryce Harrington (bryce) wrote :

Hi Alex,

I've written up some notes on configuring/troubleshooting HDMI here:


Please refer to that page for guidance on how to test some different configuration options. If you find a set that works, please detail them here and we can investigate quirking or something to make it work by default in the future. Thanks ahead of time.

Changed in xserver-xorg-video-ati:
assignee: bryceharrington → nobody
status: Confirmed → Incomplete

There have been bunch of bug fixes

Could you retest with the latest kernel
( -132 at the time of this writing )

You can get the latest kernel build here

And with the latest xorg-x11-drv-ati.
( -60 at the time of this writing )

You can get the latest xorg-x11-drv-ati build here

And report back if it either improves or fixes this issue..


I just updated to the latest kernel and xorg-x11-drv-ati (as suggested in #16), and it does not solve the problem. According to Xorg.0.log the HDMI port is detected and enabled, but still there is no signal going to the screen (no signal as in orange instead of blue light :-) ).

The video controller is an ATI Radeon HD 3200 onboard controller (mb is Asus M3a78 Pro).

I can provide more information if that is required and also test patches for xorg-x11-drv-ati.

Hello. Although the "needinfo (d.tonhofer)" flag has been set on this report, I cannot help at the present time so as my ABIT motherboard looks to be a goner and I haven't RMAed it yet. Gomen asai.

Bryce Harrington (bryce) wrote :

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

Changed in xserver-xorg-video-ati:
status: Incomplete → Invalid
phan (avoidit) wrote :

I can confirm this bug. I am using Fedora 10 (x86-64) and could neither install nor use Fedora with HDMI output. Guess what, Ubuntu (Intrepid Ipex) has the same problem too.

Today I recognized that a CRT on the Sub-D is working perfect, but I want to use a TFT.

Surprisingly with "radeonhd" I can use the HDMI output, equal if I use it with a HDMI cable to my TFT or a HDMI-DVI Convertor and DVI Cable.

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Approximately 30 (thirty) days from now Fedora will stop maintaining
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bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora
'version' of '10'.

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to a later Fedora version prior to Fedora 10's end of life.

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we may not be able to fix it before Fedora 10 is end of life. If you
would still like to see this bug fixed and are able to reproduce it
against a later version of Fedora please change the 'version' of this
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Although we aim to fix as many bugs as possible during every release's
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The process we are following is described here:

Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is
no longer maintained, which means that it will not receive any further
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If you can reproduce this bug against a currently maintained version of
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Thank you for reporting this bug and we are sorry it could not be fixed.

Changed in xserver-xorg-video-ati (Fedora):
status: In Progress → Won't Fix
Aron McCart (superfrie2) wrote :


I have this problem inside of fedora. I haven't tried the fglrx drivers like Alex has.

Here is my graphics lspci:
01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics]

I'm using the mesa drivers.

I'm pretty new to linux in general. Please tell me what I need to attach in your reply.


Aron McCart (superfrie2) wrote :

To clarify,

I my HDMI video out does not. I'm hooking it up to my DVI input on my monitor with an HDMI to DVI adapter then a regular DVI cable.

Aron McCart (superfrie2) wrote :

Wow, sorry about the terrible typos.

My HDMI video out does not work*

Changed in xserver-xorg-video-ati (Fedora):
importance: Unknown → Medium
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