Updated 64-bit Gentoo Image for RPi3 Released (now also for RPi3B+ and RPi4B)

[jlgreer1]

After reading this thread and another from the General Discussion that it is linked to, I tried the new 64 bit version on my RPi 4 - 4 Gb.

When I try to boot, my older HP display does not display correctly. The is a shape across the middle that is roughly a wedge that is shifted. It is as if it is rotated sideways relative to the rest of the screen. Everything is there, it is just broken. I tried a factory reset on the monitor and did another fresh burn to the SD card. Same result.

I experiment a lot with my RPis. I have never had an issue with this monitor before. I went back to the beta version of Raspi 64 bit. Monitor still works.

Unfortunately, I don't have another monitor to try.

[sakaki]

jlgreer1,

sorry to hear you are having trouble with this ><

If you have access to a PC you can try the following. Mount the first partition of the microSD card to which you have written the Gentoo image (it is formatted with the FAT filesystem, so you should be able to access it even on a Windows PC), and then edit the file config.txt (at the top level of this filesystem), uncommenting the following line, so it reads:

Code: Select all

hdmi_safe=1

Leave the rest of the file as-is, save, eject the microSD card and try booting again. Hopefully you will now get a successful boot with a basic, low-res display.

Once running, you can then use the RPi Config Tool (Applications -> Settings -> RPi Config Tool) to choose a more appropriate resolution.

Not sure why the automatic detection is not working in this case (as it does work for the vast majority of monitors, out of the box), but does work OK in PiOS64. If you could dump the EDID data from PiOS, that might help to narrow things down.

Best, sakaki

[jlgreer1]

Very good suggestion, Sakaki

I will give that a try.

Thank you!

[jlgreer1]

Editing the config.txt did the trick. I had to edit the file from an auxilliary drive on the RPi. Win 10 would not let me open the file system.

Ubuntu installed and ran fine. It still doesn't care for my monitor. No settings were available to make it as clear as RPi OS.

It was worth a try. I just prefer Debian/Raspi OS

Thank you for your help, Jeff