Raspberry Pi Forums

Hello, new user here. After slowly trudging through getting the Pi set up, I found that I'm able to output to one of my monitors, but can't seem to get a proper picture on the TV I want to use it with. I imagine there's a config.txt option I could change, but I'm not sure where to start. I've attached a picture of what I get.

Nowbody will be able to answer wirhout knowing more details,kg so what is the resolution of your TV? You are using the HDMI connector next to USB-C?

My apologies. I'm using the HDMI0 port and the TV is 1366x768. I managed to find a service manual for it, so I've attached the specs page just in case. Model LC-32A29L

SheaL wrote: My apologies. I'm using the HDMI0 port and the TV is 1366x768. I managed to find a service manual for it, so I've attached the specs page just in case. Model LC-32A29L

1366 x 768 monitors (and, presumably, your T.V.) are known to be using unusual HDMI timings - this is under investigation and there are other threads about the issue. (AIUI, it's been difficult to get hold of an "offending" monitor for direct testing - forum supplied edid info. has provided some clues for the engineers to work with.)
Trev.

Darn. Well if there's anything I can do to contribute to a fix then I'm more than willing to help out. I appreciate you taking the time to respond.

welcome to the club.

add this to the bottom of /boot/config.txt:

kerry_s wrote: ↑

Sat Mar 07, 2020 7:51 pm

welcome to the club.

add this to the bottom of /boot/config.txt:

Code: Select all

hdmi_group=2
hdmi_cvt=1366 768 60
hdmi_mode=87

Silly question I'm sure, I feel like I'm somewhat of a layman here, but I've only been able to get NOOBS to work properly. Using belenaEtcher with a 32gb card and Buster has only resulted in me getting a red light, an extraordinarily brief green flash, and nothing else, but ok, NOOBS it is. Anyways, The config.txt is already pre-filled with commented values, so I just un-commented and edited as necessary. The location of said commands/values doesn't really matter that much, right?

Regardless I tried your suggestion and got the same results. I also did some digging and found an individual over on the LibreELEC forum with a strikingly similar problem: https://forum.libreelec.tv/thread/17979 ... led-video/

I tried the same options they provided at the end of the thread (correcting spelling mistakes), but still no dice.

yes & no, it's better you not mess with anything else.

try the new imager:
https://www.raspberrypi.org/blog/raspbe ... g-utility/

grab this image:
https://downloads.raspberrypi.org/raspbian_latest

after you make the sdcard edit the file, before you even put it in the pi.

kerry_s wrote: ↑

Sun Mar 08, 2020 3:12 am

yes & no, it's better you not mess with anything else.

try the new imager:
https://www.raspberrypi.org/blog/raspbe ... g-utility/

grab this image:
https://downloads.raspberrypi.org/raspbian_latest

after you make the sdcard edit the file, before you even put it in the pi.

Oh very cool! It works like a charm now. Thank you so much, you have no idea how much I appreciate the help I've received here. Definitely learned a lot. If I could send you a brownie I'd definitely get started baking right now!

if you got a spare sdcard, use that applications-> accessories-> sd card copier, to make a backup copy just in case. i keep a spare so i can just pop it in in case something happens.

i ordered me a 1920x1080@60hz monitor so hopefully that will be raspbian friendly out of the box.