Solutions to most common problems with RASPBMC

[Mark]

+1

[mikeyb5753]

stuck

[nadnerb]

5. Airplay audio isn't working.
- wait for a fix

[Raudi]

(07-19-2012 11:44 PM)nadnerb Wrote:  5. Airplay audio isn't working.
- wait for a fix

Thanks, I have added it. But I have to trust you in that area since I don't own any Apple device and probably never will. They make some good hardware, but the software of at least all the i devices is just closed and crippled. And of course it is more expensive.

[pyromaniac123]

2. Videos pauses every few seconds:

Didn't use to pause in RC2 so nothing wrong on my end.

[AreaScout]

Hi All

I found the solution for 2. ( Videos pauses every few seconds: ), the screen flicker making me very nervous thing .... ( black screen then video comes back and black screen again )

It seems like that the raspb is trying to sync the depth of the resolution from your TV, i.e on bootup the raspb is switching the TV via HDMI to 1080p60 -> but ! changing this in xbmc does not effect to your TV, so someone is trying (kernel driver or hardware) to correct this everytime.

I but my TV in 1080p24 mode, this is how i have done it

First, stop xbmc

Code:

pi@raspbmc:~$ sudo initctl stop xbmc

go and get fbset

Code:

pi@raspbmc:~$ sudo apt-get install fbset

take a look to the current framebuffer settings

Code:

pi@raspbmc:~$ fbset

mode "1920x1080"
    geometry 1920 1080 1920 1080 16
    timings 0 0 0 0 0 0 0
    rgba 5/11,6/5,5/0,0/16
endmode

enable hardware acceleration, maybe to improve the xbmc GUI rendering and to enjoy some 3DDemos quite faster, dunno if the accel is needed but why not giving a try to learn something

Code:

fbset -accel true

now take a look again

Code:

pi@raspbmc:~$ fbset

mode "1920x1080"
    geometry 1920 1080 1920 1080 16
    timings 0 0 0 0 0 0 0
    accel true
    rgba 5/11,6/5,5/0,0/16
endmode

ok, let's get git and build-essential

Code:

pi@raspbmc:~$ sudo apt-get install git build-essential

clone the raspb firmware, this takes a lot of space ! ~600mb

Code:

pi@raspbmc:~$ git clone git://github.com/raspberrypi/firmware.git

now lets move some files where they should be

Code:

pi@raspbmc:~$ cd firmware/opt/vc
pi@raspbmc:~/firmware/opt/vc$ sudo mv bin /opt/vc/
pi@raspbmc:~/firmware/opt/vc$ sudo mv include /opt/vc/
pi@raspbmc:~/firmware/opt/vc$ sudo mv sbin /opt/vc/
pi@raspbmc:~/firmware/opt/vc$ sudo mv src /opt/vc/

tell our TV to switch to 1080p24 but first have a look to the supported resolutions of your TV

Code:

pi@raspbmc:~/firmware/opt/vc$ cd /opt/vc/bin
pi@raspbmc:/opt/vc/bin$ ./tvservice --modes=CEA
Group CEA has 15 modes:
           mode 1: 640x480 @ 60Hz, progressive
           mode 2: 720x480 @ 60Hz, progressive
           mode 3: 720x480 @ 60Hz, progressive
           mode 4: 1280x720 @ 60Hz, progressive
           mode 5: 1920x1080 @ 60Hz, interlaced
  (native) mode 16: 1920x1080 @ 60Hz, progressive
           mode 17: 720x576 @ 50Hz, progressive
           mode 18: 720x576 @ 50Hz, progressive
           mode 19: 1280x720 @ 50Hz, progressive
           mode 20: 1920x1080 @ 50Hz, interlaced
           mode 21: 720x576 @ 50Hz, interlaced
  (native) mode 31: 1920x1080 @ 50Hz, progressive
           mode 32: 1920x1080 @ 24Hz, progressive
           mode 33: 1920x1080 @ 25Hz, progressive
           mode 34: 1920x1080 @ 30Hz, progressive
pi@raspbmc:/opt/vc/bin$

ok mode 32 is the one for me what i was looking for

Code:

pi@raspbmc:/opt/vc/bin$ ./tvservice --explicit="CEA 32"
Powering on HDMI with explicit settings (CEA mode 32)
pi@raspbmc:/opt/vc/bin$

let's check

Code:

pi@raspbmc:/opt/vc/bin$ ./tvservice -s
state: HPD high|HDMI mode|HDCP off|composite off (0x12001a), 1920x1080 @ 24Hz, progressive
pi@raspbmc:/opt/vc/bin$

yeah done, start xbmc

Code:

pi@raspbmc:/opt/vc/bin$ sudo initctl start xbmc

enjoy flicker free movies like a mediacenter should do

oh, and try out the demos in /opt/vc/src !

RG Area

[lefizz]

If your completely crap in Linux like me another way to fix the black flashing issue is to change the display output to 1280 x 720p 60.
Every HD Tv in the world supports this res and timing and it fixes all issues for me.

OK you loose out a bit if you have loads of 1080P encodes but then as I said its a quick fix.

[MrJackson]

Does the hardware acceleration really make a difference in the GUI ?

[oz42]

how to change the text console keyboard? The FAQ is wrong, I was not asked at 1st ssh login.

[gekkegerrit101]

(07-25-2012 09:13 PM)AreaScout Wrote:  Hi All

I found the solution for 2. ( Videos pauses every few seconds: ), the screen flicker making me very nervous thing .... ( black screen then video comes back and black screen again )

It seems like that the raspb is trying to sync the depth of the resolution from your TV, i.e on bootup the raspb is switching the TV via HDMI to 1080p60 -> but ! changing this in xbmc does not effect to your TV, so someone is trying (kernel driver or hardware) to correct this everytime.

I but my TV in 1080p24 mode, this is how i have done it

...

Correct me if i'm wrong, but aren't you just doing the same thing what System>Settings>Video>Playback>Adjust display refresh rate to match video does?