03-12-2021, 11:58 PM
Does OAP support both HDMI ports on the RPi4b?
Is there any setup guidance for this?
Justin
Is there any setup guidance for this?
Justin
03-12-2021, 11:58 PM
Does OAP support both HDMI ports on the RPi4b?
Is there any setup guidance for this? Justin
03-13-2021, 02:00 AM
OpenAuto Pro is just an application ruuning on top of Raspberry PI OS. Everything supported by Raspberry PI os is supported by OpenAuto Pro app as well.
03-13-2021, 02:32 AM
03-13-2021, 08:07 PM
(03-13-2021, 02:32 AM)Justindu Wrote:(03-13-2021, 02:00 AM)BlueWave Wrote: OpenAuto Pro is just an application ruuning on top of Raspberry PI OS. Everything supported by Raspberry PI os is supported by OpenAuto Pro app as well. https://bluewavestudio.io/community/show...p?tid=1421
03-14-2021, 07:55 PM
I'm not having any luck. From preferences->Display settings, I get an error dialog that says :Unable to get monitor information!
From a terminal tvservice -l Display Number 2, type HDMI 0 Display Number 7, type HDMI 1 sudo nano /boot/config.txt #1920x1200 touch screen from John Freund Racing hdmi_cvt=1920 1200 60 5 0 0 1 hdmi_group=2 hdmi_mode=87 #hdmi_cvt=1920 1080 60 3 1 0 1 #hdmi_group=2 #hdmi_mode=87 Any advice? (03-14-2021, 07:55 PM)Justindu Wrote: I'm not having any luck. From preferences->Display settings, I get an error dialog that says :Unable to get monitor information! Unable to get monitor information error relates to the hdmi_cvt parameter. The "Fixed" mode does not allow the Display Settings preference panel to populate its lists with resolutions and frequencies. Removing, or modifying the lines in /boot/conifg.txt does change the results on the main display, and the Display Settings preference panel shows more options without an error, but this does not get me closer to seeing a second desktop in the Screen Configuration panel. Screen Configuration only ever shows me a HDMI1 labeled screen (actually HDMI0 port). I see the 2nd display (connected) responding to a signal from Pi, that is changing resolution (according to the display's own messages), but no desktop is extended to it. I assume whatever is preventing the Screen Configuration panel from seeing the 2nd HDMI, is the same issue blocking the additional desktop space. Anyone?
fbturbo? found a post that says fbturbo blocks dual screen.
https://forum.manjaro.org/t/i3-on-raspbe...rs/20996/7 fbturbo seems like a frame buffer accelerator, but now I will look to see if it is installed. Nope - the config described there is not, so the search continues.
Now working!
I found the key that was blocking my desktop from finding the 2nd display. Once I put "max_framebuffers=2" back, it started working. Commenting out max_framebuffers=2, the default must be 1, blocked the frame buffer for the 2nd screen. Also - Note the :1, or :0 in the hdmi line items below to set up each port separately. -------- # 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:0=1 disable_overscan:1=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=1280 #framebuffer_height=720 # uncomment if hdmi display is not detected and composite is being output hdmi_force_hotplug:0=1 hdmi_force_hotplug:1=1 # uncomment to force a specific HDMI mode (this will force VGA) #hdmi_group=1 #hdmi_mode=1 # uncomment to force a HDMI mode rather than DVI. This can make audio work in # DMT (computer monitor) modes hdmi_drive:0=2 hdmi_drive:1=2 # uncomment to increase signal to HDMI, if you have interference, blanking, or # no display #config_hdmi_boost:1=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 #1920x1200 touch screen from John Freund Racing HDMI0 hdmi_cvt:0=1920 1200 60 5 0 0 1 hdmi_group:0=2 hdmi_mode:0=87 #1920x1200 60hz generic HDMI0 #hdmi_group:0=2 #hdmi_mode:0=68 #1920x1080 60hz generic HDMI1 hdmi_group:1=2 hdmi_mode:1=82 # added to enable i2c for realtime clock dtoverlay=i2c-rtc,ds1307 # Enable audio (loads snd_bcm2835) #dtparam=audio=off dtparam=audio=on dtoverlay=pi3-disable-bt disable_splash=1 [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 max_framebuffers=2 gpu_mem=512 start_x=1 |
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