Multihead (3 Montiors) Sabrent USB->HDMI problems

[daidoji70]

Hmmm, and then even weirder.  After my screen was locked with
XScreensaver.  Monitor using usb->hdmi has frozen with a part of what was
the screensaver at the time.  Nothing new in Xorg.0.log.  In dmesg I get
this.  Then monitor is frozen with that until I turn it off with xrandr and
then back on again.

dmesg
[12829.941499] NVRM: GPU at PCI:0000:01:00:
GPU-2b1c658b-6a27-a224-308e-0390d9ce6746
[12829.941506] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12830.037145] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12830.896808] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12832.239084] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12833.679389] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12834.444186] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12837.606244] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12838.851853] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12841.142955] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12841.718110] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12842.301406] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12843.261192] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12843.826331] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12847.282295] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12847.852584] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12849.000491] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12850.245880] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12854.756696] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12857.820104] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12861.076843] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12862.617239] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12862.713768] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12863.191928] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12863.571298] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12867.842494] NVRM: Xid (PCI:0000:01:00): 12, COCOD 00000001 00000000
00000030 00000100 01eba420
[12871.524667] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12871.622157] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12873.248926] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12877.843699] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12879.189930] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12880.817791] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[12883.500081] NVRM: Xid (PCI:0000:01:00): 6, PE0001
[16146.454233] [drm] write mode info 153


On Tue, Oct 7, 2014 at 10:04 AM, daidoji70 <daidoji70 at gmail.com> wrote:

> Hmm, thats weird.  After a little bit from last message I get this in the
> dmesg
>
> [ 1656.344768] udl 4-1.3:1.0: swiotlb buffer is full (sz: 2097152 bytes)
> [ 1656.344772] DMA: Out of SW-IOMMU space for 2097152 bytes at device
> 4-1.3:1.0
> [ 1764.517960] [drm] write mode info 153
>
> I'm getting lines of these in Xorg.0.log
> [  1764.008] reporting 3 10 33 266
> [  1764.008] reporting 3 10 33 266
> [  1764.008] reporting 3 10 33 266
> [  1764.009] reporting 3 10 33 266
> [  1764.009] reporting 3 10 33 266
> [  1764.009] reporting 3 10 33 266
> [  1764.010] reporting 3 10 33 266
> [  1764.010] reporting 3 10 33 266
> [  1764.010] reporting 3 10 33 266
>
> Then my xrandr shows up with the stuff it did yesterday.  I switch the
> mode to one I know the monitor can support and I'm back to the grey screen
> background.  I can drag windows from one monitor to the next across the
> screen but my mouse stops at the middle monitor (I'm assuming due to the
> "Display" in X not allowing the mouse into the other "Display").
>
> So I'm back to where I was yesterday...  (Almost there, just can't get my
> mouse onto the third monitor) Anyone have any ideas what was causing all
> these udl issues above and more importantly, how can I use my mouse on that
> third monitor?  Finally, assuming I can solve that, what are best practices
> for saving all this configuration so I don't have to jump through all these
> hoops to use the udl device?
>
> CAL
>
>
>
>
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