I just wanted to ask on how far is the support on the i852/855 chipset Dual View. I can see from XFree86 startup log, that it sees the two pipes and it also is able to start with either of the pipes active (I'm either having the TFT active or the external display and it boots just fine). But if I use the hardware switching of displays in Linux, then I get about 50 pixel rows in top of the screen with noise and I lose about the same size in the bottom of the picture.
Also the laptop I have (Fujitsu-Siemens Lifebook S6120) doesn't support clone view as software independant as without Windows booted up the clone view just isn't there. I can switch between the external and internal display even while in Grub, but there is no clone view there. If I boot the factory installed windows, then I get also the clone view mode.
I have tried XiG accelerated X demo version and with that I have successfully seen undel Linux that the card runs not only clone view but also dual head (although clone view for some reason had the same refresh rate for external VGA as for the internal LCD and that sucked). I wouldn't want to use propriatary X in my laptop so I wanted to ask wether there is any support coming for at least the clone view as I need that even more than I need dual heads.
I have seen in some threads that people say that there are no specs from intel regarding these chipsets available publicly. Just as I have found in one thread somewhere (don't ask me where it was as I don't remember) there are official chipset whitepapers available on intels site and here's the link:
http://developer.intel.com/design/mobile/chipsets/datashts/ http://developer.intel.com/design/mobile/chipsets/specupdt/
I'm not a graphics developer, but I think the 855 graphics and memory hub chipset datasheed (around 200 pages) that describes the signals, registers and so on should be the right document?
I hope there will be some positive answers :)
Mario Kadastik
PS! I have tried to use i810switch to turn on the CRT while my LCD was on (on 855 chipset i810switch only support turning on/off the CRT not the LCD) and when I booted to X then I saw on my monitor that it switched resolution/frequency (the hitachi monitor I had really makes you feel the change ;), it remained on (meaning that it received some sort of signal), but it was black as X detected there no active display although it sees that CRT is present when it tests all the different possibilities, but it sees the maximum display size as (0,0) while on the LCD it sees (1024,768).
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