# GPU for kernel 3.4 1,How to enable GPU on ubuntu 15.10 download link: step 1: dpkg -i linux-bananapi-bpi-m3-kernel3\_1.2.6\_armhf.deb step 2: bpi-bootsel /usr/lib/u-boot/bananapi/bpi-m3/BPI\_M3\_720P.img.gz or bpi-bootsel /usr/lib/u-boot/bananapi/bpi-m3/BPI\_M3\_1080P.img.gz step 3: dpkg -i xserver-xorg-video-gpu-bananapi-bpi-m3\_1.0-15.10\_armhf.deb step 4: reboot 2,how to check gpu running ``` root@bananapi:~# ps ax | grep X 629 tty7 Ss+ 0:09 /usr/local/XSGX/bin/X -verbose -config /usr/local/XSG X/etc/xorg.conf :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch 1449 ttyS0 S+ 0:00 grep --color=auto X root@bananapi:~# ``` how to disable/enable gpu ``` root@bananapi:/usr/share/lightdm/lightdm.conf.d# cat 55-xserver-command-pvr.conf [Seat:*] # Dump core #xserver-command=X -core #xserver-command=/usr/local/XSGX/bin/X -verbose -config /usr/local/XSGX/etc/xorg. conf root@bananapi:/usr/share/lightdm/lightdm.conf.d# ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://bananapi.gitbook.io/bpi-m3/zh/gpuforkernel34.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.