On Fri, 2 Nov 2007 10:56:19 +0100
Luc Verhaegen
Could it be that it really is a 24bit panel and that, since we do not know any better, we set it up as an 18bit panel and it still works? When i'm back in the office; i should probably try to set up the hp laptop as 24bits. This laptop is a mobility r5xx, 1680x1050, so i was initially quite surprised to see that it was only an 18bit panel. Iirc, i attempted to drive it differently, without success, but this was in the hectic days right before XDS.
Great. Let me know how at goes, and if there is anything I can test here.
Please describe what you mean by grainy? Could there be something else going on besides dithering? I hope it is not something as straightforward as adjusting gamma.
A solid white (3 x 0xff) does not give a solid color or brightness. It looks almost identical to a panel covered in dust. I had a chat with Lenovo and they couldn't tell me of any known issues (despite the fact that you can find lots of forum posts where people have experienced recent thinkpads having this issue). They speculated that it might be a backlight effect where it doesn't give a proper, constant light. I'm sceptical though as the variation is on a pixel scale, and I would suspect an uneven backlight spread would give larger fluctuations. (They also don't consider this problem big enough to warrant a repair, so I'm stuck with solving it myself or trying to return the machine) Rgds -- -- Pierre Ossman Linux kernel, MMC maintainer http://www.kernel.org PulseAudio, core developer http://pulseaudio.org rdesktop, core developer http://www.rdesktop.org -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org