mrmrmrmr
Posts: 7
Joined: Fri Dec 07, 2018 12:31 pm

Raspberry Pi 3 B+ Reverting back to HDMI display

Fri Dec 07, 2018 12:40 pm

Hi,

I've installed a 3.5" LCD screen on my Raspberry Pi B4 board.
To activate the screen I used the "LCD-show" scripts and driver from:
https://github.com/goodtft/LCD-show/wiki

It works fine. But I don't know how to revert back to HDMI display from LCD and I could not find any information on this.

I tried the dual screen method described here:
https://www.youtube.com/watch?v=d2ouG1VmD88

But when I do that, both screens fail.
If I copy the original 99-fbturbo-conf from LCD-show , I can go to the LCD setup and it works.
But how can I make HDMI work again ?

thanks.

Andyroo
Posts: 795
Joined: Sat Jun 16, 2018 12:49 am

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Fri Dec 07, 2018 2:23 pm

I do not think you can on that copy of your OS.

Going by the comments on this thread https://github.com/goodtft/LCD-show/issues/91 core config files are changed with no backups being made!

You could try picking through the source code to see what’s added, changed and deleted :o :shock: :o
Need Pi spray - these things are breeding in my house...

mrmrmrmr
Posts: 7
Joined: Fri Dec 07, 2018 12:31 pm

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Fri Dec 07, 2018 9:08 pm

ok but what are the default config files to make HDMI primary for display ?
there must be some defaults.

DirkS
Posts: 9617
Joined: Tue Jun 19, 2012 9:46 pm
Location: Essex, UK

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Fri Dec 07, 2018 9:23 pm

If you're using the 'goodtft' stuff from https://github.com/goodtft/LCD-show can't you just run LCD-hdmi?

Andyroo
Posts: 795
Joined: Sat Jun 16, 2018 12:49 am

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Fri Dec 07, 2018 9:29 pm

Have you looked at https://github.com/goodtft/LCD-show/blo ... /README.md ? As there seems to be a command to reset it back:

Code: Select all

sudo ./LCD-hdmi
Looking at the code for this https://github.com/goodtft/LCD-show/blo ... r/LCD-hdmi there are only a few files altered so you may be able to unpick the changes.. Crulest thing is that it would have taken seconds to add a backup to the commands.

Note though this has only been updated to support Raspbian March 2018 (Release date:2018-03-13) in v1.7-20180320 so it may not work on your version if newer. Files in the repository will be very basic and may not match what yours where so this is a real use with care! What makes it worse is that any changes made since using the new display will be lost aswell :roll:

Last point - the restore does a reboot without telling you it’s needed at the start of the script.
Need Pi spray - these things are breeding in my house...

mrmrmrmr
Posts: 7
Joined: Fri Dec 07, 2018 12:31 pm

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Sat Dec 08, 2018 5:56 am

ok. I will try the LCD-hmi command.
But if goodtft is not a good way, what is the best practice for using LCD and then choosing between LCD /HDMI ?
Since I've installed Raspbian on this board just yesterday, I don't really care what I will lose when I reinstall. I just want to have a working setup for choosing between screens or making both display at the same time.

btw, is there a way to use the LCD screen just for one window output ? I mean, for example I want to run a Python code and it opens a window displaying a camera flow. Can I just point the LCD screen to show that window while HDMI displays full screen ?

mrmrmrmr
Posts: 7
Joined: Fri Dec 07, 2018 12:31 pm

Re: Raspberry Pi 3 B+ Reverting back to HDMI display

Sat Dec 08, 2018 12:59 pm

LCD-hdmi worked fine for reverting.
Now I am trying to mirror the screen (clone HDMI to LCD) and with the following X11 conf I am able to make both screens work.

However, since their screen size & resolution are different, I am not able to control anything on the LCD screen. If the HDMI is not connected I can not manage anything on desktop.
How can I scale the screen to be identical on both screens (HDMI and LCD)
Smaller icons and menu bars/items on LCD ?

My Xorg log file is also below.

Code: Select all

Section "Device"
        Identifier      "fb0"
        Driver          "fbturbo"
        Option          "fbdev" "/dev/fb0"

        Option          "SwapbuffersWait" "true"
EndSection

Section "Device"
        Identifier      "fb1"
        Driver          "fbturbo"
        Option          "fbdev" "/dev/fb1"

        Option          "SwapbuffersWait" "true"
EndSection

Section "Monitor"
    Identifier             "MonitorLCD"
    DisplaySize             76 48    # In millimeters
EndSection
Section "Monitor"
    Identifier             "MonitorHDMI"
   DisplaySize             950 600
EndSection

Section "Screen"
        Identifier      "HDMI"
        Device          "fb0"
        Monitor         "MonitorHDMI"
        Option          "Xinerama" "1"
        DefaultDepth 24
        SubSection "Display"
                # Viewport   0 0
                Depth     24
                Modes   "1920x1080" "1280x720"
                #Virtual 480 320
        EndSubSection
EndSection

Section "Screen"
        Identifier      "LCD"
        Device          "fb1"
        Monitor         "MonitorLCD"
        Option          "Xinerama" "1"
        DefaultDepth 16
        SubSection "Display"
                # Viewport   0 0
                Depth     16
                Modes   "480x320"
#               Modes   "1280x1024" "1024x768" "800x600"
                #Virtual 480 320
        EndSubSection
        SubSection "Display"
                # Viewport   0 0
                Depth     24
#               Modes   "480x320"
#               Modes   "1280x1024" "1024x768" "800x600"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          0 "HDMI"
        Screen          1 "LCD"
        Option       "Clone" "on"
        Option          "Xinerama" "off"
EndSection

logs:
root@raspberrypi:/var/log# cat Xorg.0.log
[ 2991.261]
X.Org X Server 1.19.2
Release Date: 2017-03-02
[ 2991.261] X Protocol Version 11, Revision 0
[ 2991.261] Build Operating System: Linux 4.9.41-v7+ armv7l Raspbian
[ 2991.261] Current Operating System: Linux raspberrypi 4.14.79-v7+ #1159 SMP Sun Nov 4 17:50:20 GMT 2018 armv7l
[ 2991.261] Kernel command line: 8250.nr_uarts=1 bcm2708_fb.fbwidth=1824 bcm2708_fb.fbheight=984 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 dwc_otg.lpm_enable=0 console=tty1 console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait fbcon=map:10 fbcon=font:ProFont6x11 logo.nologo
[ 2991.261] Build Date: 18 October 2017 04:55:30PM
[ 2991.261] xorg-server 2:1.19.2-1+rpt1+deb9u2 (https://www.debian.org/support)
[ 2991.261] Current version of pixman: 0.34.0
[ 2991.261] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 2991.261] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 2991.262] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Dec 8 15:50:31 2018
[ 2991.262] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 2991.262] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 2991.263] (==) ServerLayout "Default Layout"
[ 2991.263] (**) |-->Screen "HDMI" (0)
[ 2991.263] (**) | |-->Monitor "MonitorHDMI"
[ 2991.264] (**) | |-->Device "fb0"
[ 2991.264] (**) |-->Screen "LCD" (1)
[ 2991.264] (**) | |-->Monitor "MonitorLCD"
[ 2991.264] (**) | |-->Device "fb1"
[ 2991.264] (**) Option "Xinerama" "off"
[ 2991.264] (==) Automatically adding devices
[ 2991.264] (==) Automatically enabling devices
[ 2991.264] (==) Automatically adding GPU devices
[ 2991.264] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 2991.264] (WW) The directory "/usr/share/fonts/X11/misc" does not exist.
[ 2991.264] Entry deleted from font path.
[ 2991.264] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 2991.264] Entry deleted from font path.
[ 2991.265] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 2991.265] Entry deleted from font path.
[ 2991.265] (WW) The directory "/usr/share/fonts/X11/Type1" does not exist.
[ 2991.265] Entry deleted from font path.
[ 2991.265] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 2991.265] Entry deleted from font path.
[ 2991.265] (==) FontPath set to:
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/100dpi,
built-ins
[ 2991.265] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 2991.265] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 2991.265] (II) Loader magic: 0x1fbf40
[ 2991.265] (II) Module ABI versions:
[ 2991.265] X.Org ANSI C Emulation: 0.4
[ 2991.265] X.Org Video Driver: 23.0
[ 2991.265] X.Org XInput driver : 24.1
[ 2991.265] X.Org Server Extension : 10.0
[ 2991.267] (++) using VT number 7

[ 2991.268] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 2991.268] (II) no primary bus or device found
[ 2991.268] (II) LoadModule: "glx"
[ 2991.269] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 2991.273] (II) Module glx: vendor="X.Org Foundation"
[ 2991.273] compiled for 1.19.2, module version = 1.0.0
[ 2991.273] ABI class: X.Org Server Extension, version 10.0
[ 2991.274] (II) LoadModule: "fbturbo"
[ 2991.274] (II) Loading /usr/lib/xorg/modules/drivers/fbturbo_drv.so
[ 2991.274] (II) Module fbturbo: vendor="X.Org Foundation"
[ 2991.274] compiled for 1.19.2, module version = 0.5.1
[ 2991.274] Module class: X.Org Video Driver
[ 2991.274] ABI class: X.Org Video Driver, version 23.0
[ 2991.274] (II) FBTURBO: driver for framebuffer: fbturbo
[ 2991.275] (WW) Falling back to old probe method for fbturbo
[ 2991.275] (II) Loading sub module "fbdevhw"
[ 2991.275] (II) LoadModule: "fbdevhw"
[ 2991.275] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 2991.275] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 2991.275] compiled for 1.19.2, module version = 0.0.2
[ 2991.275] ABI class: X.Org Video Driver, version 23.0
[ 2991.275] (II) FBTURBO(0): using /dev/fb0
[ 2991.275] (II) FBTURBO(1): using /dev/fb1
[ 2991.275] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[ 2991.275] (**) FBTURBO(0): Depth 24, (--) framebuffer bpp 32
[ 2991.275] (==) FBTURBO(0): RGB weight 888
[ 2991.275] (==) FBTURBO(0): Default visual is TrueColor
[ 2991.276] (==) FBTURBO(0): Using gamma correction (1.0, 1.0, 1.0)
[ 2991.276] (II) FBTURBO(0): hardware: BCM2708 FB (video memory: 7011kB)
[ 2991.276] (**) FBTURBO(0): Option "fbdev" "/dev/fb0"
[ 2991.276] (**) FBTURBO(0): Option "SwapbuffersWait" "true"
[ 2991.276] (II) FBTURBO(0): processor: Unknown
[ 2991.276] (II) FBTURBO(0): checking modes against framebuffer device...
[ 2991.276] (II) FBTURBO(0): mode "1920x1080" ok
[ 2991.276] (II) FBTURBO(0): mode "1280x720" not found
[ 2991.276] (II) FBTURBO(0): checking modes against monitor...
[ 2991.276] (--) FBTURBO(0): Virtual size is 1824x984 (pitch 1824)
[ 2991.276] (**) FBTURBO(0): Built-in mode "current"
[ 2991.276] (**) FBTURBO(0): Display dimensions: (950, 600) mm
[ 2991.276] (**) FBTURBO(0): DPI set to (48, 41)
[ 2991.276] (II) Loading sub module "fb"
[ 2991.276] (II) LoadModule: "fb"
[ 2991.277] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 2991.277] (II) Module fb: vendor="X.Org Foundation"
[ 2991.277] compiled for 1.19.2, module version = 1.0.0
[ 2991.277] ABI class: X.Org ANSI C Emulation, version 0.4
[ 2991.277] (**) FBTURBO(1): Depth 16, (--) framebuffer bpp 16
[ 2991.277] (==) FBTURBO(1): RGB weight 565
[ 2991.277] (==) FBTURBO(1): Default visual is TrueColor
[ 2991.277] (==) FBTURBO(1): Using gamma correction (1.0, 1.0, 1.0)
[ 2991.277] (II) FBTURBO(1): hardware: fb_ili9486 (video memory: 300kB)
[ 2991.277] (**) FBTURBO(1): Option "fbdev" "/dev/fb1"
[ 2991.277] (**) FBTURBO(1): Option "SwapbuffersWait" "true"
[ 2991.277] (II) FBTURBO(1): processor: Unknown
[ 2991.277] (II) FBTURBO(1): checking modes against framebuffer device...
[ 2991.278] (II) FBTURBO(1): mode "480x320" not found
[ 2991.278] (II) FBTURBO(1): checking modes against monitor...
[ 2991.278] (--) FBTURBO(1): Virtual size is 480x320 (pitch 480)
[ 2991.278] (**) FBTURBO(1): Built-in mode "current"
[ 2991.278] (**) FBTURBO(1): Display dimensions: (76, 48) mm
[ 2991.278] (**) FBTURBO(1): DPI set to (160, 169)
[ 2991.278] (II) Loading sub module "fb"
[ 2991.278] (II) LoadModule: "fb"
[ 2991.278] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 2991.278] (II) Module fb: vendor="X.Org Foundation"
[ 2991.278] compiled for 1.19.2, module version = 1.0.0
[ 2991.278] ABI class: X.Org ANSI C Emulation, version 0.4
[ 2991.278] (==) Depth 24 pixmap format is 32 bpp
[ 2991.279] (II) FBTURBO(0): using backing store heuristics
[ 2991.285] (II) FBTURBO(0): can't load 'g2d_23' kernel module
[ 2991.285] (II) FBTURBO(0): failed to enable the use of sunxi display controller
[ 2991.285] (II) FBTURBO(0): No sunxi-g2d hardware detected (check /dev/disp and /dev/g2d)
[ 2991.285] (II) FBTURBO(0): G2D hardware acceleration can't be enabled
[ 2991.285] (II) FBTURBO(0): enabled fbdev copyarea acceleration
[ 2991.285] (==) FBTURBO(0): Backing store enabled
[ 2991.286] (==) FBTURBO(0): DPMS enabled
[ 2991.286] (II) FBTURBO(0): failed to enable hardware cursor
[ 2991.286] (II) FBTURBO(0): no 3D acceleration because the driver has been compiled without libUMP
[ 2991.286] (II) FBTURBO(0): if this is wrong and needs to be fixed, please check ./configure log
[ 2991.286] (==) RandR enabled
[ 2991.286] (II) FBTURBO(1): FBIOBLANK: Invalid argument (Screen blanking not supported by kernel - disabling)
[ 2991.287] (II) FBTURBO(1): using backing store heuristics
[ 2991.292] (II) FBTURBO(1): can't load 'g2d_23' kernel module
[ 2991.292] (II) FBTURBO(1): failed to enable the use of sunxi display controller
[ 2991.292] (II) FBTURBO(1): No sunxi-g2d hardware detected (check /dev/disp and /dev/g2d)
[ 2991.292] (II) FBTURBO(1): G2D hardware acceleration can't be enabled
[ 2991.292] (II) FBTURBO(1): enabled VFP/NEON optimizations
[ 2991.293] (==) FBTURBO(1): Backing store enabled
[ 2991.293] (==) FBTURBO(1): DPMS enabled
[ 2991.293] (II) FBTURBO(1): failed to enable hardware cursor
[ 2991.293] (II) FBTURBO(1): no 3D acceleration because the driver has been compiled without libUMP
[ 2991.293] (II) FBTURBO(1): if this is wrong and needs to be fixed, please check ./configure log
[ 2991.293] (==) RandR enabled
[ 2991.314] (II) SELinux: Disabled on system
[ 2991.317] (II) AIGLX: Screen 0 is not DRI2 capable
[ 2991.317] (EE) AIGLX: reverting to software rendering
[ 2991.419] (II) IGLX: enabled GLX_MESA_copy_sub_buffer
[ 2991.421] (II) IGLX: Loaded and initialized swrast
[ 2991.421] (II) GLX: Initialized DRISWRAST GL provider for screen 0
[ 2991.421] (II) AIGLX: Screen 1 is not DRI2 capable
[ 2991.421] (EE) AIGLX: reverting to software rendering
[ 2991.424] (II) IGLX: enabled GLX_MESA_copy_sub_buffer
[ 2991.426] (II) IGLX: Loaded and initialized swrast
[ 2991.426] (II) GLX: Initialized DRISWRAST GL provider for screen 1
[ 2991.560] (II) config/udev: Adding input device ADS7846 Touchscreen (/dev/input/event0)
[ 2991.561] (**) ADS7846 Touchscreen: Applying InputClass "evdev touchscreen catchall"
[ 2991.561] (**) ADS7846 Touchscreen: Applying InputClass "libinput touchscreen catchall"
[ 2991.561] (**) ADS7846 Touchscreen: Applying InputClass "evdev touchscreen catchall"
[ 2991.561] (**) ADS7846 Touchscreen: Applying InputClass "calibration"
[ 2991.561] (II) LoadModule: "evdev"
[ 2991.561] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 2991.562] (II) Module evdev: vendor="X.Org Foundation"
[ 2991.562] compiled for 1.19.0, module version = 2.10.5
[ 2991.562] Module class: X.Org XInput Driver
[ 2991.562] ABI class: X.Org XInput driver, version 24.1
[ 2991.562] (II) Using input driver 'evdev' for 'ADS7846 Touchscreen'
[ 2991.562] (**) ADS7846 Touchscreen: always reports core events
[ 2991.562] (**) evdev: ADS7846 Touchscreen: Device: "/dev/input/event0"
[ 2991.563] (--) evdev: ADS7846 Touchscreen: Vendor 0 Product 0
[ 2991.563] (--) evdev: ADS7846 Touchscreen: Found absolute axes
[ 2991.563] (--) evdev: ADS7846 Touchscreen: Found x and y absolute axes
[ 2991.563] (--) evdev: ADS7846 Touchscreen: Found absolute touchscreen
[ 2991.563] (**) Option "SwapAxes" "1"
[ 2991.563] (II) evdev: ADS7846 Touchscreen: Configuring as touchscreen
[ 2991.563] (**) evdev: ADS7846 Touchscreen: YAxisMapping: buttons 4 and 5
[ 2991.563] (**) evdev: ADS7846 Touchscreen: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 2991.563] (**) Option "config_info" "udev:/sys/devices/platform/soc/3f204000.spi/spi_master/spi0/spi0.1/input/input0/event0"
[ 2991.563] (II) XINPUT: Adding extended input device "ADS7846 Touchscreen" (type: TOUCHSCREEN, id 6)
[ 2991.563] (II) evdev: ADS7846 Touchscreen: initialized for absolute axes.
[ 2991.564] (**) ADS7846 Touchscreen: (accel) keeping acceleration scheme 1
[ 2991.564] (**) ADS7846 Touchscreen: (accel) acceleration profile 0
[ 2991.564] (**) ADS7846 Touchscreen: (accel) acceleration factor: 2.000
[ 2991.564] (**) ADS7846 Touchscreen: (accel) acceleration threshold: 4
[ 2991.566] (II) config/udev: Adding input device ADS7846 Touchscreen (/dev/input/mouse0)
[ 2991.566] (**) ADS7846 Touchscreen: Applying InputClass "calibration"
[ 2991.566] (II) No input driver specified, ignoring this device.
[ 2991.566] (II) This device may have been added with another device file.


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