{"id":63,"date":"2020-02-22T20:05:35","date_gmt":"2020-02-22T19:05:35","guid":{"rendered":"http:\/\/www.w2hp.net\/wp\/?p=63"},"modified":"2020-02-22T20:05:35","modified_gmt":"2020-02-22T19:05:35","slug":"raspberry-pi-hilfe","status":"publish","type":"post","link":"https:\/\/wp.w2hp.net\/?p=63","title":{"rendered":"Raspberry PI – hilfe"},"content":{"rendered":"
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from https:\/\/ubuntu-mate.org\/raspberry-pi\/<\/a><\/p>\n

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Re-size file\u00a0system<\/h3>\n

Ubuntu MATE\u00a016.04<\/h4>\n

You can use Ubuntu MATE Welcome to resize to automatically resize the partitions to make full use of your microSHDC card capacity. Simply click the large\u00a0Raspberry Pi Information<\/strong>\u00a0button on the Welcome screen, click the\u00a0Resize<\/strong>\u00a0button and then restart the Raspberry\u00a0Pi.<\/p>\n

Manual\u00a0Method<\/h4>\n

It\u2019s not hard to do manually. Once\u00a0booted:<\/p>\n

sudo fdisk \/dev\/mmcblk0\r\n<\/pre>\n
Delete the second partition (d, 2), then re-create it using the defaults (n, p, 2, enter, enter), then write and exit (w). Reboot the system,\u00a0then:<\/p>\n
sudo resize2fs \/dev\/mmcblk0p2\r\n<\/pre>\n
Enable and Disable\u00a0X11<\/h3>\n
We created a simple utility called\u00a0graphical<\/code>\u00a0to disable\/enable the MATE desktop environment for easily creating a headless\u00a0\u201cserver\u201d<\/em>. Executing\u00a0graphical disable<\/code>\u00a0will present a console login on the next boot, with no X11 or associated services running. If you want to get the full Ubuntu MATE desktop back, run\u00a0graphical enable<\/code>\u00a0and\u00a0reboot.<\/p>\n
Hardware accelerated video with\u00a0omxplayer<\/h3>\n
Most videos will play with hardware acceleration using\u00a0omxplayer<\/code>\u00a0which is pre-installed in Ubuntu MATE. However if you have MPEG-2 or VC-1 video video files then\u00a0you will need MPEG-2 and\/or VC-1 licenses from the\u00a0Raspberry Pi Store<\/a><\/strong>.<\/p>\n
Redirecting audio\u00a0output<\/h4>\n
You can select which audio device\u00a0omxplayer<\/code>\u00a0should output audio\u00a0to.<\/p>\n
For\u00a0HDMI<\/h5>\n
omxplayer -o hdmi video.mp4\r\n<\/pre>\n
For 3.5mm audio\u00a0jack<\/h5>\n
omxplayer -o local video.mp4\r\n<\/pre>\n
The sound will output to HDMI by default if both HDMI and the 3.5mm audio jack are connected. You can, however, force the system to output to a particular device using\u00a0amixer<\/code>.<\/p>\n
For\u00a0HDMI<\/h5>\n
sudo amixer cset numid=3 2\r\n<\/pre>\n
For 3.5mm audio\u00a0jack<\/h5>\n
sudo amixer cset numid=3 1\r\n<\/pre>\n
Hardware accelerated video with VLC and\u00a0ffmpeg<\/h3>\n
Ubuntu MATE 16.04 added OpemMAX IL hardware accelerated video playback to VLC and MMAL hardware accelerated video playback to\u00a0ffmpeg.<\/p>\n