Score:0

Unable to change screen resolution in Ubutu 21.10 with Lebula 7-Inch touchscreen monitor Raspberry pi

br flag

In order for the touchscreen to work, I need to change the resolution to 1024x600. If I go to Settings, display, I have a 'Unknown Monitor' with a resolution of 720x480 (3:2). There are no other options.

I used cvt to get the modeline for that resolution and xrandr to add the resolution.

Now in displays, I have the additional 1024x600 resolution, and I can select it and click [Apply] and confirm, but it remains 720x480. This display is on the HDMI port of the Raspberry Pi, but xrandr shows "Screen 0":

xrandr: Failed to get size of gamma for output default Screen 0: minimum 720 x 480, current 720 x 480, maximum 1024 x 600 default connected primary 720x480+0+0 0mm x 0mm 720x480 0.00* 1024x600_60.00 59.85

Any ideas on how to fix this and change the resolution?

guiverc avatar
cn flag
Ubuntu 20.10 (along with all flavors) is *End-of-Life* and thus unsupported on this site (https://askubuntu.com/help/on-topic), and many other Ubuntu sites, unless your question is specific to moving to a supported release of Ubuntu. https://fridge.ubuntu.com/2021/07/25/ubuntu-20-10-groovy-gorilla-end-of-life-reached-on-july-22-2021/ https://help.ubuntu.com/community/EOLUpgrades
heynnema avatar
ru flag
You might try Ubuntu 21.10, as it's more Rpi compatible.
br flag
It was a typo, it's actually 21.10. I'll correct the question.
mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.