[fedora-arm] Re: Funny display on Raspberry Pi

On 26/03/2020 19:39, Peter Robinson wrote:
>> I have a Raspberry Pi 3B running Fedora AAarch connected to my TV.
>>
>> After installed the latest version 31 updates, the display went weird on
>> me. Monitor preferences list an "unknown" monitor with resolution
>> 1824x984 and refresh rate 77 Hz, and colours are all wrong. What should
>> be red or orange is blue, blue is red or brown, and I'm not really sure
>> what everything else I see on the screen is supposed to look like, but
>> the greens may be more or less right.
>>
>> Any idea what's going on?
> No, but then I've not ran F-31 on a RPi for a month or two, I tend to
> move to dev releases pretty quickly and don't regularly use desktop
> UXes in testing.
So, do you reckon the Fedora 32 Beta will be usable?
>
> First question is what updates were applied, the most likely
> candidates are kernel and mesa. If you reboot into the previous kernel
> does it start working again?

Now, there's something I haven't figured out how to do very easily, as
I'm dumb enough to rely on a Bluetooth keyboard... Anyhow, I set the
default to the last kernel but one via grubby, and rebooted. Still have
the same issue.


> How long between the updates, was it
> days/weeks/months since you last updated and rebooted?
It's been a couple of months, I think.

>
>> I'm using the MATE desktop.
> Custom image? Anything else custom or did you start with
> minimal/workstation/xfce and cross grade?
This is a system that has been upgraded across several releases. I
started off with an image available through arm.fedoraproject.org, or an
earlier generation of that site - like the ones available under "Desktop
Computing" now. I think it was F28, but I'm not 100 % sure. Obviously, I
kept the image, but who can tell where I put it?
>> If I connect my CentOS 7 laptop to the same HDMI port using the same
>> cable, everything seems just fine.
> Well that's a mostly irrelevant comparison because none of the
> software is anywhere near Fedora.
Depends on your definition of near, doesn't it? But it was mostly not a
comparison at all; the point was that there is not likely to be a
problem with the TV itself or the connection to it.

- Toralf



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