[Bug 2859] Flickering or blanking on DVI output of Radeon 9200/9250

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Jul 23 22:14:29 PDT 2007


------- Comment #90 from aherrman at web.de  2007-07-23 22:14 PST -------
Short update wrt flickering problem of my radeon card.
(VGA compatible controller [0300]: ATI Technologies Inc RV280 [Radeon 9200
 PRO] [1002:5960] (rev 01))

I reported the problem begining of last year.
I tried almost all fixes/workarounds found here and elsewhere but finally
had to stick to the analog output to avoid flickering on an
Eizo FlexScan L885.

Meanwhile I have another screen. It is an Eizo FlexScan S2000.

(1) On the new screen I can use the Radeon 9200 with DVI w/o any flickering!

(2) Furthermore I have another Gfx card
 (VGA compatible controller [0300]:
 ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)] [1002:5b60])
 It works perfectly with DVI on the older L885.
 (even w/o reduced blanking modeline or such)

In fact I run each card with dual screen using both monitors w/o problems.
The only thing that is not working is the combination of

This makes me think that just certain hardware combinations suck.
It's not the radeon card not just the monitor that caused that flickering.
This is dissatisfying but I don't care anymore ...

And I think that certain monitors (e.g. Samsung 204B and Eizo L885) are
less tolerant to the signal quality on the DVI input.

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