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Pg.i830 QNX 4.25

For the old QNX2 and QNX4 RTOS

Pg.i830 QNX 4.25

Postby lrsweet » Thu Mar 14, 2013 10:26 am

I am using the Pg.i830 driver on 3 different CRTs.

It works correctly on the 6.4 inch and 15 inch CRTs but on the 12 inch CRT the display image is shifted to the right by 30 or 40 pixels and there appears to be no way to adjust that.

In this configuration when the Pg.i830 driver is run I cannot bring up the CRT menu to adjust the positioning.

Are there any command line options to the driver that could adjust the X coordinate to shift it back to the left.

I am also not sure why the built in menu would stop working with this driver running.

The CPU/GPU that is driving the display is the same in all three cases so I would guess it must be something with this particular CRT display.

Any suggestions for things to try? Using the flat mode video driver works fine but we really want to take advantage of the Pg.i830 driver and hardware acceleration.

Thanks very much.

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Re: Pg.i830 QNX 4.25

Postby Pilotek » Thu Aug 08, 2013 9:31 am

Larry, maybe you should edit some timing parameters of /etc/config/trap/crtc-settings.node file.

Read this thread: ... ngs#p50696
to understand some things.

In general for each particular monitor (CRT, LCD) and each particular resolution correct timing parameters should be used (google the web for the exact model of monitor). Practically the same timing parameters for some resolution may work for many monitors but not for all.
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Re: Pg.i830 QNX 4.25

Postby ingraham » Tue Aug 20, 2013 4:20 pm

Oddly enough, we've never had a problem on any CRT, but sometimes we get LCD monitors that do what you're describing. And sometimes we get LCD monitors that just plain won't work, period. Go figure.
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