How can I change the bash screen resolution to custom values?

Question

I installed archlinux-arm on the RPI.

I have a TV, which has 1680x1050 resolution. Where can I change the bash settings to fit the screen correctly? I also want to the boot screen (where I can see what is loading) to be nice.

I have this TV. Which is the correct settings for this in the config.txt?

Just to be correct in terminology - there are no bash settings related to resolution as bash doesn't care about that. All it knows about is text. Now how big the text is and how many characters can you fit on the screen depends on terminal settings. There are couple of terminals you can use - one is the "startup" one, which uses full screen framebuffer (this is the one you see before using startx) and the other can be run as window in graphical environment. What PhonicUK said tells you how to change framebuffer resolution which is used to display (almost) all the graphical output of RPi. — Krzysztof Adamski, Aug 10 '12 at 12:14

score 13 · Accepted Answer · edited Aug 10 '12 at 14:55

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In the /boot/config.txt file, add hdmi_group=2 and hdmi_mode=58 to get 1680x1050. You must be root to do this.
Restart the Raspberry Pi; sudo reboot.

Notes

See http://elinux.org/RPi_config.txt for a complete list of resolutions and modes.

edited Aug 10 '12 at 14:55

Alex Chamberlain

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answered Aug 10 '12 at 11:47

PhonicUK

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It dosent matter if I set the value of hdmi_mode= to 9, 16, or 35, the screen resolution stays the same. Why? – Gergely Fehérvári Aug 10 '12 at 14:36
Have you verified that your changes are actually being saved to the file? Also can your display verify what the input resolution is, if so - what is it? Also make sure you have the hdmi_group=2 setting. – PhonicUK Aug 10 '12 at 14:39
Yes, Im sure I set the hdmi_group=2, and the changes are surely saved. But how do you mean that input verify stuff? – Gergely Fehérvári Aug 10 '12 at 14:41
Most displays have a 'info' screen that will tell you information about the input signal, including details about the screen resolution and refresh rate. Also neither of those values you said you used were the one I suggested. Try 58 and 57. – PhonicUK Aug 10 '12 at 14:44
Despite any value I set to hdmi_mode the resolution stays the same. I tried with 58 and 57, and the resolution stays about 640x480 or something like this. I've got this, if matters http://www.amazon.co.uk/Samsung-Syncmaster-225MW-inch-pixels/dp/B000R5G322 – Gergely Fehérvári Aug 10 '12 at 14:48
Have you restarted the system? – Alex Chamberlain Aug 10 '12 at 14:54
If this hasn't solved your problem yet, why have you accepted it? – Alex Chamberlain Aug 10 '12 at 14:56
I sure reboot. I accepted this, because i thought It solved my problem, because the answer is correct where I should set the config. On the other hand I cant find the correct value for my TV. – Gergely Fehérvári Aug 10 '12 at 15:01
Can you pastebin the contents of your config.txt? – PhonicUK Aug 10 '12 at 15:10
hdmi_group=2 \n hdmi_mode=58 – Gergely Fehérvári Aug 10 '12 at 15:19
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Are you using just straight HDMI, or are you using a HDMI->DVI connector somewhere? (Try using one if you're not, or not using one if you are) – PhonicUK Aug 10 '12 at 15:25
straight hdmi. i will try then. ok – Gergely Fehérvári Aug 10 '12 at 15:35
With HDMI > DVI it works well. Why not with straight HDMI? – Gergely Fehérvári Aug 10 '12 at 15:52
I'd guess your TV is derp. – PhonicUK Aug 10 '12 at 18:09

score 0 · Answer 2 · edited Dec 07 '12 at 09:39

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I can explain what I think. In the config file have you 'uncommented' meaning to remove the # from a specific line. If u do not do this the Pi wont think any changes have been made.

Also here is a link to a resolution spreadsheet.

edited Dec 07 '12 at 09:39

Piotr Kula

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answered Dec 05 '12 at 21:46

Fred bloggs

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How can I change the bash screen resolution to custom values?

2 Answers2

Notes