Thank you Guillaume. I tried to figure it out, but couldn't figure out
the documentation for the config.txt. I plugged it into a different
screen and then plugged it back into the 7" screen and now it works. Not
sure why it would do that from the first boot and then work, but next
time we see each other, I can show you the device.
v/r
Doug
On 10/28/19 8:25 AM, Guillaume Gardet wrote:
Hi Doug,
-----Original Message-----
From: ddemaio <[email protected]>
Sent: 28 October 2019 06:55
To: [email protected]
Subject: [opensuse-arm] Joy-Pi 7" Pi Screen No Signal
Hi all,
The openSUSE Project now has a Joy Pi to show at some of the conferences.
That's great! 😊
However, I tried the latest TW RP3 image and after the bootscreen, the screen
phases out to a no signal. It's this screen here:
https://www.joy-it.net/en/products/RB-LCD-7-2
This is an HDMI display, right?
The documentation suggests to try the following options in Config.txt:
dtparam=audio=on
max_usb_current=1
hdmi_force_hotplug=1
config_hdmi_boost=7
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_drive=1
display_rotate=0
hdmi_cvt 1024 600 60 6 0 0 0
Could you try them, please?
But the firmware seems to handle the LCD display properly as you have the boot
screen (up to Grub?).
So, my guess is that the Linux kernel try to reconfigure the display and fails.
Do you have some kernel traces to share?
Do any you have any documentation or recommendations on how I can try to fix
these during the boot. I'll do some research as well, but I thought I would ask
you
all first, since you might know.
As stated above, my guess is the Linux kernel fails to set a proper resolution.
Cheers,
Guillaume
v/r
Doug
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