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Comment 1 by Azimutz, Aug 29, 2011
Hi Macman, try using AtiPorts=3. I removed the 3 port limit imposed to all chipsets above Cedar on r1375; maybe that's the problem!? That's all i can think of.
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Comment 2 by MacMan, Aug 30, 2011
Using AtiPorts with any number less than 6 solves the problem. I only see the white screen when AtiPorts=6 or when using the frame buffer default of 6. Are we sure 6 ports is correct for Bulrushes? Or is the issue with the card?
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Comment 3 by Azimutz, Aug 30, 2011
The info about the framebuffers i've been using comes mostly from bcc9's topic tools/guide: http://www.insanelymac.com/forum/index.php?showtopic=249642 it's based on info collected from real Mac's, so i assume it's correct. Nr of ports seems to be a hardware limitation; the tip for the AtiPorts key comes from this post: http://forum.voodooprojects.org/index.php/topic,1959.msg10402.html#ms g10402
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Comment 4 by MacMan, Aug 30, 2011
Thanks, good stuff in bcc9's post. Using his tool I see that Bulrushes is 6 ports. I wonder if the issue is only with the Gigabyte card I have or all 6670's? If it's all then it's easier to work around it.
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Comment 5 by Azimutz, Aug 30, 2011
Your welcome. I saw this one coming, backfiring on me :) so i have some stuff half cooked up. Will put it up to my branch soon, for evaluation...
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Comment 6 by Azimutz, Aug 31, 2011
Take a look at r1486/87 and see if it makes any sense. Works fine on my tests...
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Comment 7 by MacMan, Aug 31, 2011
Makes sense to me. I'll give it a try with using 3 for the 6670 and let you know how it works.
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Comment 8 by MacMan, Aug 31, 2011
I built r1488 with a couple of additional cards and tested it with a HD 5770, HD 6670 and a HD 6850 and it worked as expected. Suggested changes for lines 1366 and 1370: 1366 from: verbose("Nr of ports set to framebuffer's default: %d\n", card->ports); to: verbose("Nr of ports set using framebuffer default: %d\n", card->ports); 1370 from: verbose("Nr of ports set to card's ?? max: %d\n", card->ports); To: verbose("Nr of ports set using framebuffer port override: %d\n", card->ports);
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Comment 9 by Azimutz, Sep 5, 2011
Hi Macman... sorry for the delay. About the code, i still have my doubts... this all depends on user feedback and... we'll see. About the debug messages, they are not thought as final; will review as i go (if i go); i just don't agree with "override" for this code change, which i consider to be in the "user action" scope. Sure, the code does a similar thing, replacing the key, but it's more a "limit" than an override. Anyway, think you can close the issue; we can talk about this some were else.
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Comment 10 by Cosmosis Jones, Sep 5, 2011
Macman you can change the debug lines in your branch. we may merge them later...
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Reported by MacMan, Aug 29, 2011