F13: nouveau driver seems to swap video streams on NVIDIA NVS-290.
mhlavink at redhat.com
Thu Jun 10 08:19:56 UTC 2010
On Thursday, June 10, 2010 00:31:20 Charles Butterfield wrote:
> I suspect the nouveau driver is swapping or mislabeling the two video
> streams that the NVS-290 card generates. Here are my clues:
> - Fedora-13 and nouveau driver (latest yum updates as of midnight)
> - NVIDIA NVS-290 video card
> - nouveau exposes 2 outputs to XRandR (DVI-I-1 and DVI-I-2)
> - The NVS-290 video card has a DMS-59 connector, with a
> short DMS-59 to Dual VGA cable with VGA connectors
> labeled 1 and 2.
> - VGA connectors #1 and #2 are connected to monitors #1(Left)
> and #2(Right).
> 1) At boot time, before the nouveau driver is involved, the boot text is
> output on the VGA connector labeled "1", which is connected to
> #1 (on my left).
> 2) At GDM login time, monitor #1 is clearly assigned to the right of the
> Virtual screen (its right edge is "impenetrable") while monitor #2 is
> on the left side. Weird, but in theory just an odd default. But
> 3) Inspecting the "xrandr" output, it is clear that pixels on the
> screen that are directed to "DVI-I-1" are going to monitor #2 and
> vice versa (DVI-I-2 goes to monitor #1). I checked the default
> situation, then flipped the two halves of the virtual screen back
> and forth with xrandr, checking the xrandr status each time.
> 4) The last bit of weirdness is that the xrandr geometry setting
> seemed reversed from what would be expected. Maybe that is the
> inevitable result of mislabeling the data stream, or perhaps it is an
> important clue in its own right. My head hurts at the point.
> 5) Oh yes, I buzzed out the cable, just in case it was mis-wired or
> mis-labled. It's fine, that is DMS59:VGA2_RED -> VGA#2:RED, etc.
> Please advise if this should be posted somewhere else.
I guess you've hit the same bug as me, I even have the same video card.
Bug was reported here: https://bugzilla.redhat.com/show_bug.cgi?id=582582
but it was closed as notabug
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