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ChrisLK
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Location: Germany / Hamburg

Pi4: Screen settings are not saved

Mon Dec 02, 2019 7:23 pm

Hello @all,
as a newbie with a brandnew Pi4, I try to discover the possibilities....
Quite annoying is that the screen settings are not saved. After every boot I have to set again the resolution. (LXRandR 0.3.2)
I use a hdmi display with 1920*1080 and I didn't disconnect any cable.
I'd be happy, if someone could help.

Thanks a lot.
ChrisLK

bjtheone
Posts: 454
Joined: Mon May 20, 2019 11:28 pm
Location: The Frozen North (AKA Canada)

Re: Pi4: Screen settings are not saved

Mon Dec 02, 2019 7:56 pm

You are going to need to supply some more information as that is not how it normally behaves. Potentially your setup is not quite right. I have a 1080p monitor and it happily stays set at the resolution I selected across reboots.

First the basics: how did you load the OS (NOOBS or Etcher), did you complete the install and setup including updating, what version of Buster are you running and how did you "set" the screen resolution.? Also, how are you shutting it down?

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ChrisLK
Posts: 5
Joined: Mon Dec 02, 2019 7:04 pm
Location: Germany / Hamburg

Re: Pi4: Screen settings are not saved

Mon Dec 02, 2019 8:12 pm

thanks for the quick answer...
I installed from noobs a week ago after purchasing the pi4, I have no idea which version it is (where is "about"...)
I did set the resolution using the settings menu (its a german version). The Menu is called "Setting resolution and external displays)
And shutdown is always klicking on the raspberry and using the icon at the bottom..
Well, I'm quite experienced in the win-world, but I'd like to learn using linux.
I was successful installing citrix, but can't cope with the displayresolution... :? :shock:

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ChrisLK
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Location: Germany / Hamburg

Re: Pi4: Screen settings are not saved

Tue Dec 03, 2019 7:48 pm

ok..., meanwhile I tried the config.txt, but no way, after rebooting my 1920*1080 display greets me with 1024x768 resolution :twisted:
Any help? I'd be happy...
Here my config.txt:
# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
framebuffer_width=1920
framebuffer_height=1080

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
dtoverlay=vc4-fkms-v3d

# NOOBS Auto-generated Settings:
hdmi_force_hotplug=1

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FTrevorGowen
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Re: Pi4: Screen settings are not saved

Wed Dec 04, 2019 12:39 am

Before editing /boot/config.txt (which is trickier with NOOBS since there may be more than one version, depending on how many O.S.'s the NOOBS installer has installed) it's best to check what HDMI settings are available and are "preferred" or "native". (For most displays a "preferred" mode is automatically detected and used but this relies on the display providing a "well-formed" EDID file etc.) So, if you can remotely login to your P4B or use it well-enough with the lower than desired resolution can you run the tvservice commands below, preferably with an unmodified /boot/config.txt, and report back:

Code: Select all

tvservice -n
tvservice -m DMT
tvservice -m CEA
tvservice -s
Also, just in case something has been changed/added by trying out various raspi-config options etc. can you post the result of:

Code: Select all

cat /boot/cmdline.txt
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, B2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, A+ and a B2) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

RossDv8
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Joined: Thu Jan 21, 2016 12:35 pm

Re: Pi4: Screen settings are not saved

Wed Dec 04, 2019 12:45 am

I may not be a Pi 'expert', but as a retired computer tech, this bit looks like it might be forcing 1024 x 768
# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82
Remember, nobody is listening to you
until you fart ...

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FTrevorGowen
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Re: Pi4: Screen settings are not saved

Wed Dec 04, 2019 12:55 am

RossDv8 wrote:
Wed Dec 04, 2019 12:45 am
I may not be a Pi 'expert', but as a retired computer tech, this bit looks like it might be forcing 1024 x 768
# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82
I've cross-checked that here: https://www.raspberrypi.org/documentati ... t/video.md - group 2 == DMT and mode 82 == 1920 x 1080 (possibly inserted by the O.P's raspi-config mod. referred to in the first post). However it's possible that the "display" is actually a T.V. rather than a monitor for which, whilst some T.V.'s support a few DMT modes, CEA (group 1) modes are usually better supported. The tvservice results should clarify matters.
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, B2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, A+ and a B2) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

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ChrisLK
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Location: Germany / Hamburg

Re: Pi4: Screen settings are not saved

Thu Dec 05, 2019 5:15 pm

... well, I appreciate your help, but I didn't understand what to do.
My display is a regular Philips Computer display, it works fine with 1920*1080.
I can change the settings, I can click on "save", but it doesn't work. After the next reboot its again back to 1024...

I uncommented this:
# uncomment to force a console size. By default it will be display's size minus
# overscan.
framebuffer_width=1920
framebuffer_height=1080

nothing changed

I didn't change this:
# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82

But what does it mean? ...to force HMDI, this will force VGA - :?: :?: :?: :?:

I mean this is a just another trial to learn a bit Linux, but as always before, its getting annoying...

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ChrisLK
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Joined: Mon Dec 02, 2019 7:04 pm
Location: Germany / Hamburg

Re: Pi4: Screen settings are not saved

Thu Dec 05, 2019 5:40 pm

YEAH, SOLVED !!! :D :D :D

I uncommented this:
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
hdmi_drive=2

But it might be useless, after rebooting I had again 1024*768, but...., maybe I used the wrong setting
First I used "Bildschirmeinstellungen", instead the also offered "Screen Configuration"

Now, putting the changes in "Screen Configuration" the were saved...

I'm happy

Next step is to get sound on my bluetooth device...

thanks for the assistance.
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