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Bug#447754: xserver-xorg-video-intel: i945GM No Picture with resolutions > 1024x768 with TMDS-1 while CRT works fine



Guido Guenther wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.1.1-4
> Severity: normal
>
> Hi,
> I've connected an intel mac mini with a Panasonic PT AX-100E LCD beamer.
> While this worked fine using the analog cable (either with a 1280x768 or
> a 1280x720 resolution) using the digital signal with a DVI to HDMI
> adapter doesn't work for high resolutions. 1024x768 and lower
> resolutions are fine while higher resolutions don't display any image.
> Looking at the log the calculated vert refresh rate seems to be wrong
> since it's always zero:
>
> For the 1280x768 mode:
>
> (II) intel(0): Modeline "1280x768"x0.0   80.14  1280 1344 1480 1680  768 769 772 795 (47.7 kHz)
> (II) intel(0): Adjusted mode for pipe A:
> (II) intel(0): Modeline "1280x768"x0.0   80.14  1280 1344 1480 1680  768 769 772 795 (47.7 kHz)
> chosen: dotclock 160457 vco 1604571 ((m 117, m1 20, m2 5), n 5, (p 10, p1 1, p2 10))
>
> and for the 1280x720 mode (coming from a handcrafted modeline in xorg.conf):
>
> (II) intel(0): Modeline "1280x720"x0.0   74.52  1280 1312 1368 1676  720 724 730 750 (44.5 kHz)
> (II) intel(0): Adjusted mode for pipe A:
> (II) intel(0): Modeline "1280x720"x0.0   74.52  1280 1312 1368 1676  720 724 730 750 (44.5 kHz)
> chosen: dotclock 148800 vco 1488000 ((m 93, m1 15, m2 6), n 4, (p 10, p1 1, p2 10))
>
> The x0.0 looks like a driver bug. The log says further down for these
> tow modes:
>
> (EE) intel(0): I830 Vblank Pipe Setup Failed 0
> (EE) intel(0): I830 Vblank Pipe Setup Failed 0
>
> while everything looks o.k. for 1024x768.
>
> Any ideas?
>   

Does xserver-xorg-video-intel 2.2.0 from unstable help?

Brice





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