rmhatch
Posts: 11
Joined: Thu Oct 03, 2013 9:13 am

LXDE Desktop Problems

Fri Apr 03, 2015 8:10 am

I just upgraded to the Feb 2015 "NOOBS" build of Raspbian (I was using one from early 2014 until 2 wks ago).
The desktop is very different in appearance, but seems 2 work the same--with one critical exception. I learned the trick of setting up /boot/config.txt last year when I had problems using omxplayer with larger hdmi panels that would default to 1080p. Specifically, setting

hdmi_group=1
hdmi_mode=4

2 force display mode to 720p. In the previous Raspbian desktop, this caused no problems; but the current version gets squeezed to about 1/2 size and the formatting of my app is all goofed up. Let me stress, at this point, that it's just the linux display that gets re-sized incorrectly (both boot text and desktop). Omxplayer doesn't seem 2 mind; it actually works a bit better--and the formatting is perfect.

It looks like the previous desktop version would "re-sample" the video after reading the config and adjust the window size; the present version does not (I'm not sure what actually happens; this is just how it looks).

Is there any way I can fix this? Does anyone understand what this is about? This is a "deal-breaker for the app I'm working on!!!

Thanx in advance 4 any help or assistance!!!

gkreidl
Posts: 6335
Joined: Thu Jan 26, 2012 1:07 pm
Location: Germany

Re: Gnome Desktop Problems

Fri Apr 03, 2015 8:43 am

Check your /boot/config.txt:
are there any values set for framebuffer_width and framebuffer_height (and not commented out)?
Minimal Kiosk Browser (kweb)
Slim, fast webkit browser with support for audio+video+playlists+youtube+pdf+download
Optional fullscreen kiosk mode and command interface for embedded applications
Includes omxplayerGUI, an X front end for omxplayer

fruitoftheloom
Posts: 23549
Joined: Tue Mar 25, 2014 12:40 pm
Location: Delightful Dorset

Re: Gnome Desktop Problems

Fri Apr 03, 2015 8:47 am

fyi it is LXDE Desktop in Raspbian not Gnome ;)
Rather than negativity think outside the box !
RPi 4B 4GB (SSD Boot) RaspiOS64 ARM64
Asus ChromeBox 3 Celeron is my other computer...

User avatar
AndyD
Posts: 2334
Joined: Sat Jan 21, 2012 8:13 am
Location: Melbourne, Australia
Contact: Website

Re: Gnome Desktop Problems

Fri Apr 03, 2015 8:51 am

gkreidl wrote:Check your /boot/config.txt:
are there any values set for framebuffer_width and framebuffer_height (and not commented out)?
Yes, can you run the following commands in a terminal and report the output

Code: Select all

tvservice -s
fbset

rmhatch
Posts: 11
Joined: Thu Oct 03, 2013 9:13 am

Re: LXDE Desktop Problems

Sun Apr 19, 2015 2:26 am

(I made original query that started this thread ...)
In order to solve the problem, I had 2 do 3 things: (1) As suggested, un-comment the framebuffer width/height
(values in config are just right 4 720p), (2) un-comment the "disable_overscan=1" line, and (3) at the end of
config.txt in a section "auto-generated by system" comment out the line: "disable_overscan=0" and:
VOILA!!! HDMI I/O will B forced 2 720p 4 ALL displays and the displays of browser, media player, etc. will always
B uniform!!!

Return to “Troubleshooting”