#12955: NVidia GeForce 6150 (NV44) graphics issues
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Reporter: vidrep | Owner: rudolfc
Type: bug | Status: reopened
Priority: normal | Milestone: Unscheduled
Component: Drivers/Graphics/nVidia | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Platform: All |
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Comment (by rudolfc):
Vidrep,
Will you please tell me exactly which modes did not (or did) work then? As
said: I need to crosscheck that against the logfile to find out in which
direction to look for the solution :-)
And: if you say that 'the monitor agrees' do you actually mean to tell me
that the monitor not only accepts the mode, but it also reports the mode,
including refreshrate, correctly? Please confirm.. :-)
The 1680x1680 mode is a thing I see more often from monitors (rectangle
mode). No idea why it's there. Anyway: your monitor reports it can do this
mode, but we simply do not offer it.
What we do is:
- we have a modelist inside each driver which will be offered for the
modes that your monitor is expected to be able to do. The rest is
surpressed. There's (if I remember correctly) one exception to this rule:
- the 'extra mode' a monitor reports is added to the modelist explicitly
as this is the native mode, and sometimes it has more restrictions (in
timing) compared to a standard modeline for the same resolution. Don't
know by heart if we actually check these other restrictions, but in
practice there's no problem there.
In your case I think/hope/expect that the PLL is still having trouble for
certain settings for the pixelclock (and so refreshrate). It might be
programmed outside it's workable limits and then it simply fails to output
that what's requested and does something else: this can well result in a
black screen.
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Ticket URL: <https://dev.haiku-os.org/ticket/12955#comment:37>
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