[mythtv-users] intermittent error starting mythfrontend on Raspberry PI OS 64 bit

James Abernathy jfabernathy at gmail.com
Tue Dec 14 16:57:14 UTC 2021 

On Tue, Dec 14, 2021 at 11:36 AM James Abernathy <jfabernathy at gmail.com>
wrote:

> I run mythfrontend from the console on my Raspberry Pi 4 under Bullseye
> aarch64. When it starts up it's great, but about 50% of the time it fails
> due to:
> drmModeGetResources failed (Operation not supported)
>
> I have to reboot until it starts up correctly.  This is on a UHD 4K TV. It
> seems to happen more than on a FHD TV. I'll attach the script (modified
> from MikeB2013's pi-utils) I run to start it and 2 log files: one a capture
> of the console and one the mythfrontend log file.
> -------------------------------------------------
> #!/bin/bash
>
> # script to run mythfrontend from version 31 on Raspberry Pi under Raspian
> Buster using EGLFS
> # can be added to .bashrc to allow autostart of mythfrontend on boot
>
> # Last Modified 24 July 2020
>
> # Author Mike Bibbings
>
> #check for any arguments on command line, if so use for mythfrontend
> command, so we can use different parameters
> #e.g. run_mythfrontend.sh --logpath /home/pi --loglevel debug
> # if no arguments set --logpath /tmp
> if [ -z "$*" ] ; then
> ARGUMENTS="--logpath /tmp -O PowerOffTVOnExit=0"
> else
> ARGUMENTS="$*"
> fi
>
> echo "Starting MythTV Frontend -- this may take a few seconds -- Please
> wait"
>
> echo performance | sudo tee
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>
> #get first 2 characters
> CURRENT_REFRESH=60
>
> CURRENT_RES="1920x1080"
>
> RESOLUTION="$CURRENT_RES@$CURRENT_REFRESH"
>
> echo "Setting screen to $RESOLUTION"
>
> # we need override file to force correct resolution.
> # QT defaults to using EDID from connected hdmi device
> # pi2/3 use /dev/dri/card0,  pi4 /dev/dri/card1
> # find out which model of Pi we have
>
>
> CARD="card1"
>
> #file created everytime this script is run,avoids checking previous and
> current resolution everytime
> bash -c "cat >/home/pi/pi_mythfrontend.json" <<ENDOFSCRIPTINPUT
> {
>     "device": "/dev/dri/${CARD}",
>     "outputs": [
>         { "name": "HDMI1", "mode": "${RESOLUTION}" }
>     ]
> }
> ENDOFSCRIPTINPUT
>
> #for QT debug add to command line QT_QPA_EGLFS_DEBUG=1
> QT_LOGGING_RULES=qt.qpa.*=true
> QT_QPA_EGLFS_ALWAYS_SET_MODE="1" QT_QPA_PLATFORM=eglfs
> QT_QPA_EGLFS_DEBUG=1 QT_LOGGING_RULES=qt.qpa.*=true
> QT_QPA_EGLFS_KMS_CONFIG=/home/pi/pi_mythfrontend.json mythfrontend
> $ARGUMENTS
> # fixup keyboard after exit from mythfrontend, bug in QT causes segment
> fault which kills keyboard input
> kbd_mode -u
> # restore cursor
> setterm  --cursor on
>
> exit 0
> -----------------------------
> Starting MythTV Frontend -- this may take a few seconds -- Please wait
> performance
> Setting screen to 1920x1080 at 60
> qt.qpa.egldeviceintegration: EGL device integration plugin keys:
> ("eglfs_emu", "eglfs_kms_egldevice", "eglfs_kms", "eglfs_x11")
> qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted):
> ("eglfs_kms", "eglfs_emu", "eglfs_kms_egldevice", "eglfs_x11")
> qt.qpa.egldeviceintegration: Trying to load device EGL integration
> "eglfs_kms"
> qt.qpa.eglfs.kms: Loading KMS setup from "/home/pi/pi_mythfrontend.json"
> qt.qpa.eglfs.kms: Requested configuration (some settings may be ignored):
>   headless: false
>   hwcursor: true
>   pbuffers: false
>   separateScreens: false
>   virtualDesktopLayout: 0
>   outputs: QMap(("HDMI1", QMap(("mode", QVariant(QString, "1920x1080 at 60"))("name",
> QVariant(QString, "HDMI1")))))
> qt.qpa.eglfs.kms: New DRM/KMS via GBM integration created
> qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_kms"
> qt.qpa.eglfs.kms: platformInit: Opening DRM device
> qt.qpa.eglfs.kms: GBM: Using DRM device "/dev/dri/card1" specified in
> config file
> qt.qpa.eglfs.kms: Using backend-provided DRM device /dev/dri/card1
> qt.qpa.eglfs.kms: Creating GBM device for file descriptor 4 obtained from
> "/dev/dri/card1"
> qt.qpa.eglfs.kms: Initalizing event reader for device 0x55c92a68f0 fd 4
> qt.qpa.eglfs.kms: Querying EGLDisplay
> qt.qpa.eglfs.kms: Event reader thread: entering event loop
> drmModeGetResources failed (Operation not supported)
> qt.qpa.input: libinput: event0  - Wireless Keyboard/Mouse: is tagged by
> udev as: Keyboard
> qt.qpa.input: libinput: event0  - Wireless Keyboard/Mouse: device is a
> keyboard
> qt.qpa.input: libinput: event1  - Wireless Keyboard/Mouse: is tagged by
> udev as: Mouse
> qt.qpa.input: libinput: event1  - Wireless Keyboard/Mouse: device is a
> pointer
> qt.qpa.input: libinput: event2  - Wireless Keyboard/Mouse Consumer
> Control: is tagged by udev as: Keyboard
> qt.qpa.input: libinput: event2  - Wireless Keyboard/Mouse Consumer
> Control: device is a keyboard
> qt.qpa.input: libinput: event5  - Harmony Keyboard Mouse: is tagged by
> udev as: Mouse
> qt.qpa.input: libinput: event5  - Harmony Keyboard Mouse: device is a
> pointer
> qt.qpa.input: libinput: event6  - Harmony Keyboard: is tagged by udev as:
> Keyboard
> qt.qpa.input: libinput: event6  - Harmony Keyboard: device is a keyboard
> qt.qpa.input: libinput: event7  - Harmony Keyboard Consumer Control: is
> tagged by udev as: Keyboard
> qt.qpa.input: libinput: event7  - Harmony Keyboard Consumer Control:
> device is a keyboard
> qt.qpa.input: libinput: event8  - Harmony Keyboard System Control: is
> tagged by udev as: Keyboard
> qt.qpa.input: libinput: event8  - Harmony Keyboard System Control: device
> is a keyboard
> qt.qpa.input: libinput: event3  - vc4: is tagged by udev as: Keyboard
> Pointingstick
> qt.qpa.input: libinput: event3  - vc4: device is a pointer
> qt.qpa.input: libinput: event3  - vc4: device is a keyboard
> qt.qpa.input: libinput: event4  - vc4: is tagged by udev as: Keyboard
> Pointingstick
> qt.qpa.input: libinput: event4  - vc4: device is a pointer
> qt.qpa.input: libinput: event4  - vc4: device is a keyboard
> qt.qpa.input: Using xkbcommon for key mapping
> no screens available, assuming 24-bit color
> 2021-12-14 11:14:15.102024 I  Setup Interrupt handler
> 2021-12-14 11:14:15.102048 I  Setup Terminated handler
> 2021-12-14 11:14:15.102057 I  Setup Segmentation fault handler
> 2021-12-14 11:14:15.102065 I  Setup Aborted handler
> 2021-12-14 11:14:15.102071 I  Setup Bus error handler
> 2021-12-14 11:14:15.102079 I  Setup Floating point exception handler
> 2021-12-14 11:14:15.102087 I  Setup Illegal instruction handler
> 2021-12-14 11:14:15.102101 I  Setup Real-time signal 0 handler
> 2021-12-14 11:14:15.102112 I  Setup User defined signal 1 handler
> 2021-12-14 11:14:15.102119 I  Setup User defined signal 2 handler
> 2021-12-14 11:14:15.102125 I  Setup Hangup handler
> 2021-12-14 11:14:15.102548 C  mythfrontend version: master
> [v32-Pre-3144-g8d60da4ac4] www.mythtv.org
> 2021-12-14 11:14:15.102554 C  Qt version: compile: 5.15.2, runtime: 5.15.2
> 2021-12-14 11:14:15.102643 I  Debian GNU/Linux 11 (bullseye) (arm64)
> 2021-12-14 11:14:15.102647 N  Enabled verbose msgs:  general
> 2021-12-14 11:14:15.102832 N  Setting Log Level to LOG_INFO
> 2021-12-14 11:14:15.113288 I  Added logging to the console
> 2021-12-14 11:14:15.113323 N  Using runtime prefix = /usr
> 2021-12-14 11:14:15.113328 N  Using configuration directory =
> /home/pi/.mythtv
> 2021-12-14 11:14:15.113388 I  Assumed character encoding: en_US.UTF-8
> 2021-12-14 11:14:15.113438 N  Setting 'PowerOffTVOnExit' being forced to
> '0'
> 2021-12-14 11:14:15.114043 I  Added logging to
> /tmp/mythfrontend.20211214161415.1360.log
> 2021-12-14 11:14:15.114390 I  Loading en_us translation for module
> mythfrontend
> 2021-12-14 11:14:15.115077 I  Empty LocalHostName. This is typical.
> 2021-12-14 11:14:15.115090 I  Using a profile name of: 'rpi4-mythtv'
> (Usually the same as this host's name.)
> 2021-12-14 11:14:15.115232 I  Start up testing connections. DB localhost,
> BE , attempt 0, status dbAwake, Delay: 2000
> 2021-12-14 11:14:16.638604 N  Setting QT default locale to en_US
> 2021-12-14 11:14:16.638616 I  Current locale en_US
> 2021-12-14 11:14:16.638714 N  Reading locale defaults from
> /usr/share/mythtv//locales/en_us.xml
> 2021-12-14 11:14:16.676535 E  PowerDBus: No UPower interface. Unable to
> monitor battery state
> 2021-12-14 11:14:16.698512 I  Power: On AC power
> 2021-12-14 11:14:16.698543 I  Power: Supported actions: Restart,Shutdown
> 2021-12-14 11:14:16.698572 N  Setting 'PowerOffTVOnExit' being forced to
> '0'
> 2021-12-14 11:14:16.706057 I  Listening on TCP 0.0.0.0:6547
> 2021-12-14 11:14:16.707395 I  Listening on TCP [::]:6547
> 2021-12-14 11:14:16.822177 I  Loading en_us translation for module
> mythfrontend
> 2021-12-14 11:14:16.842117 I  VRR: No variable refresh rate support
> detected
> 2021-12-14 11:14:16.842128 E  Display: Qt has no screens!
> 2021-12-14 11:14:16.842166 N  Display: Desktop video mode: 1920x1080
> 60.000Hz
> 2021-12-14 11:14:16.854076 I  InputHandler: Starting
> 2021-12-14 11:14:16.854916 E  LIRC: Failed to connect to Unix socket
> '/var/run/lirc/lircd'
> eno: No such file or directory (2)
> 2021-12-14 11:14:16.854994 I  No joystick configuration found, not
> enabling joystick control
> 2021-12-14 11:14:16.855438 I  UDPListener: Enabling
> 2021-12-14 11:14:16.857565 I  Binding to UDP 0.0.0.0:6948
> 2021-12-14 11:14:16.857710 I  Binding to UDP [::]:6948
> 2021-12-14 11:14:16.891795 I  Using Frameless Window
> 2021-12-14 11:14:16.891800 I  Using Full Screen Window
> 2021-12-14 11:14:16.891864 I  Qt: Cannot create window: no screens
> available
> Handling Aborted
> ./run_mythfrontend.sh: line 51:  1360 Aborted
> QT_QPA_EGLFS_ALWAYS_SET_MODE="1" QT_QPA_PLATFORM=eglfs QT_QPA_EGLFS_DEBUG=1
> QT_LOGGING_RULES=qt.qpa.*=true
> QT_QPA_EGLFS_KMS_CONFIG=/home/pi/pi_mythfrontend.json mythfrontend
> $ARGUMENTS
> The keyboard is in some unknown mode
> Changing to the requested mode may make your keyboard unusable, please use
> -f to force the change.
> ---------------------------------------
> 2021-12-14 11:14:15.102024 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Interrupt handler
> 2021-12-14 11:14:15.102048 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Terminated handler
> 2021-12-14 11:14:15.102057 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Segmentation fault
> handler
> 2021-12-14 11:14:15.102065 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Aborted handler
> 2021-12-14 11:14:15.102071 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Bus error handler
> 2021-12-14 11:14:15.102079 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Floating point exception
> handler
> 2021-12-14 11:14:15.102087 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Illegal instruction
> handler
> 2021-12-14 11:14:15.102101 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Real-time signal 0
> handler
> 2021-12-14 11:14:15.102112 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup User defined signal 1
> handler
> 2021-12-14 11:14:15.102119 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup User defined signal 2
> handler
> 2021-12-14 11:14:15.102125 I [1360/1360] thread_unknown
> signalhandling.cpp:179 (SetHandlerPrivate) - Setup Hangup handler
> 2021-12-14 11:14:15.102548 C [1360/1360] thread_unknown
> mythcommandlineparser.cpp:2797 (ConfigureLogging) - mythfrontend version:
> master [v32-Pre-3144-g8d60da4ac4] www.mythtv.org
> 2021-12-14 11:14:15.102554 C [1360/1360] thread_unknown
> mythcommandlineparser.cpp:2801 (ConfigureLogging) - Qt version: compile:
> 5.15.2, runtime: 5.15.2
> 2021-12-14 11:14:15.102643 I [1360/1360] thread_unknown
> mythcommandlineparser.cpp:2803 (ConfigureLogging) - Debian GNU/Linux 11
> (bullseye) (arm64)
> 2021-12-14 11:14:15.102647 N [1360/1360] thread_unknown
> mythcommandlineparser.cpp:2805 (ConfigureLogging) - Enabled verbose msgs:
>  general
> 2021-12-14 11:14:15.102832 N [1360/1360] thread_unknown logging.cpp:686
> (logStart) - Setting Log Level to LOG_INFO
> 2021-12-14 11:14:15.113288 I [1360/1363] Logger logging.cpp:274 (run) -
> Added logging to the console
> 2021-12-14 11:14:15.113323 N [1360/1360] thread_unknown mythdirs.cpp:203
> (InitializeMythDirs) - Using runtime prefix = /usr
> 2021-12-14 11:14:15.113328 N [1360/1360] thread_unknown mythdirs.cpp:204
> (InitializeMythDirs) - Using configuration directory = /home/pi/.mythtv
> 2021-12-14 11:14:15.113388 I [1360/1360] CoreContext
> mythcorecontext.cpp:287 (Init) - Assumed character encoding: en_US.UTF-8
> 2021-12-14 11:14:15.113438 N [1360/1360] CoreContext
> mythcommandlineparser.cpp:2836 (ApplySettingsOverride) - Setting
> 'PowerOffTVOnExit' being forced to '0'
> 2021-12-14 11:14:15.114043 I [1360/1362] LogForward loggingserver.cpp:110
> (FileLogger) - Added logging to /tmp/mythfrontend.20211214161415.1360.log
> 2021-12-14 11:14:15.114390 I [1360/1360] CoreContext
> mythtranslation.cpp:62 (load) - Loading en_us translation for module
> mythfrontend
> 2021-12-14 11:14:15.115077 I [1360/1360] CoreContext mythcontext.cpp:628
> (LoadDatabaseSettings) - Empty LocalHostName. This is typical.
> 2021-12-14 11:14:15.115090 I [1360/1360] CoreContext mythcontext.cpp:635
> (LoadDatabaseSettings) - Using a profile name of: 'rpi4-mythtv' (Usually
> the same as this host's name.)
> 2021-12-14 11:14:15.115232 I [1360/1360] CoreContext mythcontext.cpp:884
> (TestDBconnection) - Start up testing connections. DB localhost, BE ,
> attempt 0, status dbAwake, Delay: 2000
> 2021-12-14 11:14:16.638604 N [1360/1360] CoreContext
> mythcorecontext.cpp:1852 (InitLocale) - Setting QT default locale to en_US
> 2021-12-14 11:14:16.638616 I [1360/1360] CoreContext
> mythcorecontext.cpp:1885 (SaveLocaleDefaults) - Current locale en_US
> 2021-12-14 11:14:16.638714 N [1360/1360] CoreContext mythlocale.cpp:120
> (LoadDefaultsFromXML) - Reading locale defaults from
> /usr/share/mythtv//locales/en_us.xml
> 2021-12-14 11:14:16.676535 E [1360/1360] CoreContext
> platforms/mythpowerdbus.cpp:102 (Init) - PowerDBus: No UPower interface.
> Unable to monitor battery state
> 2021-12-14 11:14:16.698512 I [1360/1360] CoreContext mythpower.cpp:353
> (PowerLevelChanged) - Power: On AC power
> 2021-12-14 11:14:16.698543 I [1360/1360] CoreContext mythpower.cpp:135
> (Init) - Power: Supported actions: Restart,Shutdown
> 2021-12-14 11:14:16.698572 N [1360/1360] CoreContext
> mythcommandlineparser.cpp:2836 (ApplySettingsOverride) - Setting
> 'PowerOffTVOnExit' being forced to '0'
> 2021-12-14 11:14:16.706057 I [1360/1360] CoreContext serverpool.cpp:415
> (listen) - Listening on TCP 0.0.0.0:6547
> 2021-12-14 11:14:16.707395 I [1360/1360] CoreContext serverpool.cpp:415
> (listen) - Listening on TCP [::]:6547
> 2021-12-14 11:14:16.822177 I [1360/1360] CoreContext
> mythtranslation.cpp:62 (load) - Loading en_us translation for module
> mythfrontend
> 2021-12-14 11:14:16.842117 I [1360/1360] CoreContext mythvrr.cpp:93
> (Create) - VRR: No variable refresh rate support detected
> 2021-12-14 11:14:16.842128 E [1360/1360] CoreContext mythdisplay.cpp:624
> (InitScreenBounds) - Display: Qt has no screens!
> 2021-12-14 11:14:16.842166 N [1360/1360] CoreContext mythdisplay.cpp:545
> (Initialise) - Display: Desktop video mode: 1920x1080 60.000Hz
> 2021-12-14 11:14:16.854076 I [1360/1360] CoreContext
> devices/mythinputdevicehandler.cpp:53 (Start) - InputHandler: Starting
> 2021-12-14 11:14:16.854916 E [1360/1360] CoreContext devices/lirc.cpp:198
> (Init) - LIRC: Failed to connect to Unix socket '/var/run/lirc/lircd'
> eno: No such file or directory (2)
> 2021-12-14 11:14:16.854994 I [1360/1360] CoreContext
> devices/jsmenu.cpp:140 (ReadConfig) - No joystick configuration found, not
> enabling joystick control
> 2021-12-14 11:14:16.855438 I [1360/1372] UDP mythudplistener.cpp:34
> (DoEnable) - UDPListener: Enabling
> 2021-12-14 11:14:16.857565 I [1360/1372] UDP serverpool.cpp:556 (bind) -
> Binding to UDP 0.0.0.0:6948
> 2021-12-14 11:14:16.857710 I [1360/1372] UDP serverpool.cpp:556 (bind) -
> Binding to UDP [::]:6948
> 2021-12-14 11:14:16.891795 I [1360/1360] CoreContext
> mythmainwindow.cpp:659 (Init) - Using Frameless Window
> 2021-12-14 11:14:16.891800 I [1360/1360] CoreContext
> mythmainwindow.cpp:675 (Init) - Using Full Screen Window
> 2021-12-14 11:14:16.891864 I [1360/1360] CoreContext
> mythcommandlineparser.cpp:2816 (operator()) - Qt: Cannot create window: no
> screens available
>

 I have tried to simplify the key part of the command from this:

QT_QPA_EGLFS_ALWAYS_SET_MODE="1" QT_QPA_PLATFORM=eglfs QT_QPA_EGLFS_DEBUG=1
QT_LOGGING_RULES=qt.qpa.*=true
QT_QPA_EGLFS_KMS_CONFIG=/home/pi/pi_mythfrontend.json mythfrontend
$ARGUMENTS

to this:

QT_QPA_EGLFS_ALWAYS_SET_MODE="1" QT_QPA_PLATFORM=eglfs QT_QPA_EGLFS_DEBUG=1
QT_LOGGING_RULES=qt.qpa.*=true  mythfrontend $ARGUMENTS

It runs, but the CONFIG is defaulting to my UHD 4K parameters so the FPS
jitter goes from +/-0.03 to  +/- 1.29. and the picture is no longer smooth.
With the config it's supposed to make it 1080P. When it works it's great.

Jim A
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