On Sunday 09 April 2017 18:58:07 Gene Heskett wrote: > On Sunday 09 April 2017 12:09:20 Alan Corey wrote: > > Color depth is a deep subject (couldn't resist). Different windows > > (every X program technically has it's own window) can run at > > different depths even right next to each other. Programs request a > > depth from X or the window manager, not to mention a color map and > > graphics context. If you have xwininfo (command line program so > > it's not in menus) try it a little: > > > > pi2# xwininfo > > > > xwininfo: Please select the window about which you > > would like information by clicking the > > mouse in that window. > > > > xwininfo: Window id: 0x300008c "Gmail - question on armhf color > > depth - Mozilla Firefox" > > > > Absolute upper-left X: 35 > > Absolute upper-left Y: 65 > > Relative upper-left X: 1 > > Relative upper-left Y: 30 > > Width: 1189 > > Height: 870 > > Depth: 24 > > Visual: 0x21 > > Visual Class: TrueColor > > Border width: 0 > > Class: InputOutput > > Colormap: 0x20 (installed) > > Bit Gravity State: NorthWestGravity > > Window Gravity State: NorthWestGravity > > Backing Store State: NotUseful > > Save Under State: no > > Map State: IsViewable > > Override Redirect State: no > > Corners: +35+65 -696+65 -696-145 +35-145 > > -geometry 1189x870+34+35 > > > > The Pi seems to make more use of a frame buffer than machines with > > separate video cards. Devoting more RAM to the GPU in raspi-config > > may have a little effect, I have 64 megs. A frame buffer is > > memory-mapped video you can actually write into. fbset may show you > > something: > > xwininfo reports on the windsow clicked in and since I'm logged into > the pi with an ssh -Y profile, it dutifully reports on the shell > window on this machine. > > > pi2# fbset > > The pi is running on a cheap AOC monitor that can only do 1366 by 780 > or some such relatively odd-ball size I had to set in the kernels > cmdline.txt. > > Interestingly this 1366x768 is NOT listed by fbset! So it looks like > I'll have to go to its console to run xwininfo, brb. > > Out at the pi, its 1366x768, 16 bit. The rest of it is a copy of what > you pasted in above. > > I'll take a look at fbset's man page. And I think video ram is 128 > megs. Maybe I'll learn something. :)
That had been commented out. I put it back in addition to setting the fb's lines to what its doing. Time to get down on my prayer bones and reboot for effects. > > Thanks Alan. > > [...] > > Cheers, Gene Heskett Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>
