Cannot set up dual screens on Mobility Radeon 7500 (IBM ThinkPad T40)

[Lil]

Binary package hint: displayconfig-gtk

Hello,

I previously reported a bug on the screen becoming scrambled when I set up a dual screen setup on my IBM ThinkPad T40 that has a Mobility Radeon 7500. That does not happen any more with the latest Gutsy beta and today's distribution upgrade (2007-10-06).

However I can't displayconfig-gtk to work for me at all. I have tried choosing the ati and radeon drivers but neither has made any difference and I have concentrated on using the 'ati' driver.

With both I cannot set the secondary display to be a secondary display. I can either enable it as the primary or disable it and same with the primary display. The laptop has a standard XGA panel, and my monitor I am testing is a Dell E772p CRT monitor.

If I disable the primary screen (that's the icon on the left that looks like a laptop) and set the secondary screen to be the Dell, use a basic 1024x768 which I know the E772p can do and it fails to start X, which leads me to the bullet proof X dialog asking me if I wish to configure which I do and I set the laptop back to be the default, use a generic 1024x768 display panel at 60Hz and it works.

If I click 'test' on setting the E772p to be the default screen and disable the LCD, displayconfig-gtk starts to make the changes and then just exits and puts the E722p into standby.

I have tried this when booting with the monitor plugged in and when hot plugging.

FN+F7 (Switch between LCD, Monitor, LCD+Monitor output) does allow me to mirror but I can do this on Feisty at the moment anyway.

Essentially all the controls to configure a secondary screen are disabled. I have chosen the ati driver, and it does say ati in xorg.conf.

I'll attach the output from ddcprobe, xrandr, and parse-edid and my current xorg.conf in a moment.

Interestingly ddcprobe pulls out the correct details but Xrandr since the release upgrade (I had installed a vanilla copy of Ubuntu 7.10 Beta) does not, whereas on the LiveCD it did... Could this be a hint?

Hope this can be sorted as this is a major reason for moving to Gutsy and so far my experience with display config-gtk has been...not too good.

I have checked this isn't a duplicate and I hope it's not, but I couldn't see a similar post/issue.

Thanks,
Vicky

[Sebastian Heinlein (glatzor)]

This correct we don't support xrandr and the ati driver no longer supports xinerama.

[Lil (vicky-lamburn-deactivatedaccount)]

Hiya,

Does the 'radeon' driver support this now, or for dual screen configuration
on an ATI Mobility Radeon 7500; will I need to edit xorg.conf manually as
per usual?

Thanks,

Vicky

On 06/10/2007, Sebastian Heinlein <email address hidden> wrote:
>
> *** This bug is a duplicate of bug 140822 ***
> https://bugs.launchpad.net/bugs/140822
>
> This correct we don't support xrandr and the ati driver no longer
> supports xinerama.
>
> ** This bug has been marked a duplicate of bug 140822
> The X Server does not support the XRandR extension
>
> --
> Cannot set up dual screens on Mobility Radeon 7500 (IBM ThinkPad T40)
> https://bugs.launchpad.net/bugs/149819
> You received this bug notification because you are a direct subscriber
> of the bug.
>