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Changing the resolution on rpi3

Posted: Sat Aug 19, 2017 12:02 am
by Tunppi
hello i have tried to follow instructions on how to change the resolution via editing the config file
i have the lcd tft screen with kedei.net lcd35_v1 driver its resolution is 480x320 16/18bit and it is a shield that connects to the gpio pins. i do get it work but the os is bleeding off the screens and i cannot use the menus properly due they bleed off the screens.

the screen is this from here.
https://vadelmapii.com/tuote/35-tuuman- ... erry-pille

is this too small of an resolution or is it possible to get working?
i have very little experience on editing the config via terminal and since im from finland i had trouble using the ^X and ^O commands due i have a us layout mini keyboard and my keyboard setting is in finnish so i dont know what button gives the ^ :roll:
if you could be so kind and give an instruction for a dummie on how to change the resolution i would be ever so thankful!

:edit: im currently running ubuntu mate. but am ready to change to raspbian jessie too if its recommendable?

:edit: managed to figure how to fiddle with mate's config but did not see any noticeable difference, figured out that you can alt + drag to move the off screen windows so that the preference windows are readable.
also by installing the pulseaudio manager i am now hearing music normally instead of lagging horrendously.

Thanks!
Tunppi

Re: Changing the resolution on rpi3

Posted: Sat Aug 19, 2017 6:52 pm
by wh7qq
Your keyboard is probably currently set to "us" (or "uk" or "gb")and you simply replace that code in the /etc/default/keyboard file. Still, you may have problems getting to that in nano if you can't use ^X or ^O, so if you do

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sudo pcmanfm
in the command line, you can get root privileges in the file manager and edit from there with root privileges with leafpad or your choice of text editor (but do not use libre-office as it may put in non-printing characters).

The

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sudo raspi-config
utility also has "localization options". You can select Finland for your locale, set your desired time zone and the keyboard layout. I have had some problem getting the keyboard layout tweak to work for the language setting so I found it necessary to change the settings manually as described above.

It looks like the overscan settings in your /boot/config.txt file need some adjusting. If you open that file and drill down through the file, you will see entries for left, right, top and bottom "overscan" with numeric values associated with them and also an "enable overscan". If you edit the numeric values, positive or negative depending on which direction you need to go for the various positions, you should be able to tweak it in.

Ubuntu Mate for the RPi has its own forum at https://ubuntu-mate.community/ so you may find some help there also. I don't remember if "raspi-config" works from Ubuntu-Mate or not. Raspbian-Jessie has just been upgraded with Raspbian-Stretch. I have switched back and forth between Jessie and UMate several times and cannot say which is 'better"...it is a matter of personal choice and perhaps even your mood. Both work well.