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I have a projector with a very minor defect in the lamp. The projector itself still works fine, but the image projected shows that the blue pixel parts are slightly moved to the left compared to red and green. This is a bit annoying, though it doesn't break the usability of the projector.
Is it somehow possible to tell the graphics cards driver to move every blue part of a pixel like 30 pixels to the right?
This would, on a normal-working-screen, be annoying, but on my projector, it should be able to "correct" the error without buying a new lamp.
I use Debian 9 as Operating System. lspci | grep -i graph gives me
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
and I use nouveau as display driver on KDE.
MusterMirko
Posted 2019-11-01T19:06:46.287
Reputation: 1
1That should be an alignment function in the projector, perhaps even a mechanical adjustment, depending on the model (it might be helpful to add that info to the question). Check to make sure the lamp is properly and securely installed (a mechanical jolt to the projector could have bumped it a little loose or out of alignment). I suspect it would be possible to code something to modify/interpret the source material to compensate, but what you're asking isn't a normal feature of the graphics subsystem. Its function is to display stuff correctly rather than compensate for malfunctioning hardware. – fixer1234 – 2019-11-01T19:44:08.857