Mailinglist Archive: radeonhd (352 mails)

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Re: [radeonhd] Detection Problems with Latest Git
  • From: Matthias Hopf <mhopf@xxxxxxx>
  • Date: Fri, 11 Apr 2008 18:33:11 +0200
  • Message-id: <20080411163310.GA31245@xxxxxxx>
First of all, is this a regression, or did you have this with previous
versions as well, or is this the first test?

On Apr 11, 08 10:40:26 -0400, Tyson Whitehead wrote:
1- The EDID information for the laptop screen is not aquired under any
circumstances. The Xorg log file contains lines like so

(II) RADEONHD(0): Query for AtomBIOS Get Panel EDID: failed
(WW) RADEONHD(0): No monitor size info, assuming 96dpi

(strange that 'Panel' is not all in caps there like everywhere else).
The VESA driver, however, reports the following:

This still happens from time to time - apparently the Vesa BIOS does
emulate DDC there. Strange. Maybe we should think about accessing the
Vesa BIOS if we don't get any other information. Egbert?

2- If I plug an external monitor into the HDMI port (through a HDMI ->
DVI cable), either before or after starting Xorg, the monitor indicates
it is switchng to DVI mode, but nothing happens on the computer end
(xrandr report nothing and nothing shows up in the Xorg logs).

Maybe your connector table is buggered up. You might want to check
Option "HPD" "swap"
and/or verify with rhd_conntest as described in the README.

3- If I plug an external monitor into the VGA port before starting Xorg,
it is recognized, and I can fully control it via xrandr. However, I
loose my ability to switch to a virtual terminal (ctrl+alt+F1), and the

What do you mean with "loose"? Doesn't it do the switch any more, or is
the screen blank?

latop screen also refuses to work (remains dark) on any subsequent
restarts of Xorg (without rebooting the latop) unless the external
monitor is re-plugged into the VGA port before the restart.

This very much looks like a broken connector table.

Further, once I unplug the VGA connection, xrandr starts reporting bogus
DVI-D_1 information until the next time I re-plugin the VGA connection
(even if nothing has ever been plugged into the HDMI connection):

Eek. Sounds like some data structures are pushed around the wrong way.
Or maybe a side effect of the broken connector table?

tyson@whitehead2:~$ xrandr --output VGA_1 --auto
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 155 (RANDR)
Minor opcode of failed request: 21 ()
Serial number of failed request: 17
Current serial number in output stream: 17

You have to get a newer xrandr (1.2.3 or git). That is actually a FAQ.

Can you create a bug report with your information?

Matthias

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