XO 1.5 Thanks,
Reuben On Jul 16, 2010, at 12:46 PM, Martin Langhoff wrote: > On XO-1? Or XO-1.5? > > Maybe I typo'ed the rpm name... > > > m > > On Fri, Jul 16, 2010 at 12:07 PM, Reuben K. Caron > <[email protected]> wrote: >> Martin, >> Esteban found that xorg-x11-drv-sisvga is not available >> but xorg-x11-drv-sisusb is available. Using xorg-x11-drv-sisusb >> worked fine. >> Reuben >> >> Begin forwarded message: >> >> Message: 2 >> Date: Fri, 9 Jul 2010 17:18:47 -0400 >> From: Martin Langhoff <[email protected]> >> Subject: Re: USB2VGA adapters on XO-1.5 (and XO-1 with F11 images) >> To: OLPC Devel <[email protected]> >> Cc: Sridhar Dhanapalan <[email protected]>, [email protected], >> Keith Wilbern <[email protected]>, [email protected] >> Message-ID: >> <[email protected]> >> Content-Type: text/plain; charset="iso-8859-1" >> >> On Thu, Jul 8, 2010 at 1:14 PM, Martin Langhoff >> <[email protected]> wrote: >> >> For monitors/projectors that can handle something close to 1200x900 >> -- >> >> 1152x864, you can use Xinerama instead. Here is an xorg.conf that >> does >> >> exactly that: >> >> The Xinerama approach turned out to be a winner in terms of >> performance and !bugginess. >> >> Turns out that with a bit of elbow grease we can make it work on >> 1024x768 which is what most projectors support. >> >> - yum install xorg-x11-drv-sisvga xorg-x11-server-Xephyr >> >> - Grab the files from http://dev.laptop.org/~martin/usbvga/xinerama/ >> olpc-configure goes to /etc/init.d/ , make it executable >> olpc-session goes to /usr/bin/ , make it executable >> xorg-xo1.5-dcon-extmon.conf goes to /etc/X11/ >> >> - Plug the USB2VGA device >> >> - Reboot & Enjoy >> >> Limitations and notes: >> >> ?- Needs to be "switched on" at X startup time. olpc-configure checks >> at boot time if sisusbvga is loaded and changes the xorg.conf symlink >> if needed. My patch also fixes a longstanding old bug where the >> xorg.conf was 'set' in the first boot. >> >> ?- The desktop is a little bit smaller. On the XO, the desktop >> appears in the top-left corner -- on the external monitor / projector >> it fills up the screen perfectly. >> >> - Icons can appear slightly pixellated. I think this technique may >> expose a bug in Sugar and in some activities (ie: TurtleArt) that >> keep >> a copy of rendered SVGs as bitmaps. >> >> ?- Performance is acceptable. (We are saturating the USB 2 bandwidth >> with the amount of pixels and the bitdepth). >> >> - The Sugar cursor is back! >> >> - Video works! No Xv however, so it's not particularly fast. >> >> Patch to olpc-utils is attached -- I haven't tested the spec changes. >> >> cheers, >> >> >> m >> -- >> [email protected] >> [email protected] -- School Server Architect >> ?- ask interesting questions >> ?- don't get distracted with shiny stuff? - working code first >> ?- http://wiki.laptop.org/go/User:Martinlanghoff >> > > > > -- > [email protected] -- School Server Architect > - ask interesting questions > - don't get distracted with shiny stuff - working code first > - http://wiki.laptop.org/go/User:Martinlanghoff _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
