RT 4.19.71-rt24-v7l+ brakes USB on Raspberry PI 4 OS (Version 11/01/2021)

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14 Jan 2021 06:51 #195290 by nion
I followed the install link linuxcnc.org/docs/2.8/html/getting-start...lling_on_raspbian_10 and after I install the rtpreempt kernell I lose all USB ports.
Makes no difference if I update OS soon after I install the OS

This is the lsusb looks like before kernel update
pi@raspberrypi:~ $ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1357:1000 P&E Microcomputer Systems (My keyboard & mouse)
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

This is the lsusb looks like before kernel update
pi@raspberrypi:~ $ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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14 Jan 2021 15:38 #195324 by andypugh
This seems to be a problem with a new version of the RPi4.
(The original version of the RPi4 works fine)

Are you using an 8GB Pi? At least one person has said that configuring to only use 4GB bypasses the problem. This sort-of makes sense if the 8GB Pi always expects a 64-bit OS.

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14 Jan 2021 15:54 #195326 by andypugh
I think I am making some progress:

andypugh@pi400:~ $ uname -a
Linux pi400 5.4.83-rt48-v7l+ #3 SMP Thu Jan 14 01:16:19 GMT 2021 armv7l GNU/Linux
The following user(s) said Thank You: tommylight

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14 Jan 2021 19:35 #195364 by nion
I'm using RPI 4 with 4Gb RAM
I installed the Raspberry PI 4 OS (Version 11/01/2021) because chromium-browser on the RPI ISO Image from linuxcnc.org/downloads/ does not start

pi@linuxcnc:~ $ chromium-browser
[1286:1286:0114/203020.585703:FATAL:zygote_host_impl_linux.cc(117)] No usable sandbox! Update your kernel or see chromium.googlesource.com/chromium/src/+...ndbox_development.md for more information on developing with the SUID sandbox. If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox.

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14 Jan 2021 22:55 #195374 by andypugh
sudo apt-get reinstall chromium
Fixed the Chromium problem for me.

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14 Jan 2021 22:58 - 14 Jan 2021 22:58 #195375 by andypugh
Can some of you tests this new kernel? (probably best done on a new SD card so as not to wreck your existing install).

www.linuxcnc.org/temp/linux-image-5.4.83...t48-v7l+-4_armhf.deb

It's the latest Pi kernel with the realtime patch on top.

It works for me on a Pi400.

One way to install is to download the file, then
sudo apt-get install ./linux-image-5.4.83-rt48-v7l+_5.4.83-rt48-v7l+-4_armhf.deb

The ./ tells apt to look at a file, not on the repository server.
Last edit: 14 Jan 2021 22:58 by andypugh.

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15 Jan 2021 00:34 - 15 Jan 2021 00:37 #195382 by alkabal
Instal done after cloning the sdcard to usb key, but uname -a i see nothing changed ???
Linux linuxcnc 4.19.71-rt24-v7l+ #4 SMP PREEMPT RT Thu Apr 30 22:00:15 CDT 2020 armv7l GNU/Linux

now i try apt-get upgrade
agnostics apt apt-utils arandr base-files bluez-firmware chromium-browser chromium-browser-l10n
  chromium-codecs-ffmpeg-extra distro-info-data dphys-swapfile espeak espeak-data firmware-atheros firmware-brcm80211
  firmware-libertas firmware-misc-nonfree firmware-realtek libapt-inst2.0 libapt-pkg5.0 libbrotli1 libcups2 libcupsimage2
  libegl-mesa0 libespeak1 libexif12 libfm-data libfm-extra4 libfm-gtk-data libfm-gtk4 libfm-modules libfm4 libfreetype6
  libfreetype6-dev libgbm1 libgl1-mesa-dri libglapi-mesa libgles2-mesa libglx-mesa0 libgssapi-krb5-2 libgssdp-1.0-3
  libgupnp-1.0-4 libimobiledevice6 libjavascriptcoregtk-4.0-18 libjpeg62-turbo libk5crypto3 libkrb5-3 libkrb5support0
  libldap-2.4-2 libldap-common liblirc-client0 libmariadb3 libobrender32v5 libobt2v5 libp11-kit0 libpam-systemd
  libpolkit-agent-1-0 libpolkit-backend-1-0 libpolkit-gobject-1-0 libpq5 libproxy-tools libproxy1v5 libpulse0
  libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5opengl5 libqt5printsupport5 libqt5sql5
  libqt5sql5-sqlite libqt5test5 libqt5widgets5 libqt5xml5 libraspberrypi-bin libraspberrypi-dev libraspberrypi-doc
  libraspberrypi0 libsqlite3-0 libsystemd0 libwebkit2gtk-4.0-37 libx11-data libx11-xcb1 libxerces-c3.2 libxml2
  linuxcnc-doc-en lxpanel lxpanel-data lxplug-bluetooth lxplug-cputemp lxplug-ejecter lxplug-magnifier lxplug-network
  lxplug-ptbatt lxplug-volume lxterminal mariadb-common mesa-va-drivers mesa-vdpau-drivers obconf openbox openssl pcmanfm
  pi-greeter pi-package pi-package-data pi-package-session piclone pipanel pishutdown piwiz pixflat-icons policykit-1
  pprompt python-apt-common python-rpi.gpio python3-apt python3-lxml python3-rpi.gpio qt5-gtk-platformtheme
  raspberrypi-bootloader raspberrypi-sys-mods raspi-config rc-gui rp-bookshelf rp-prefapps rpd-plym-splash
  rpi-chromium-mods rpi-eeprom rpi.gpio-common systemd systemd-sysv thonny tzdata xserver-common xserver-xorg-core
Last edit: 15 Jan 2021 00:37 by alkabal.

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15 Jan 2021 01:02 #195385 by nion
This is no go.
On Raspberry Pi4 4Gb il lock the boot process on the rainbow CPU test

Before Installing the .deb
Linux raspberrypi 5.4.83-v7l+ #1379 SMP Mon Dec 14 13:11:54 GMT 2020 armv7l GNU/Linux

pi@raspberrypi:~/Downloads $ sudo apt-get install ./linux-image-5.4.83-rt48-v7l+_5.4.83-rt48-v7l+-4_armhf.deb
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'linux-image-5.4.83-rt48-v7l+' instead of './linux-image-5.4.83-rt48-v7l+_5.4.83-rt48-v7l+-4_armhf.deb'
The following packages will be REMOVED:
raspberrypi-kernel
The following NEW packages will be installed:
linux-image-5.4.83-rt48-v7l+
0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded.
Need to get 0 B/19.6 MB of archives.
After this operation, 213 MB disk space will be freed.
Do you want to continue? [Y/n] Y
Get:1 /home/pi/Downloads/linux-image-5.4.83-rt48-v7l+_5.4.83-rt48-v7l+-4_armhf.deb linux-image-5.4.83-rt48-v7l+ armhf 5.4.83-rt48-v7l+-4 [19.6 MB]
(Reading database ... 98460 files and directories currently installed.)
Removing raspberrypi-kernel (1.20210108-1) ...
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 5.4.83+ /boot/kernel.img
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 5.4.83-v7+ /boot/kernel7.img
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 5.4.83-v7l+ /boot/kernel7l.img
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 5.4.83-v8+ /boot/kernel8.img
Selecting previously unselected package linux-image-5.4.83-rt48-v7l+.
(Reading database ... 90311 files and directories currently installed.)
Preparing to unpack .../linux-image-5.4.83-rt48-v7l+_5.4.83-rt48-v7l+-4_armhf.deb ...
Adding 'diversion of /boot/./System.map-5.4.83-rt48-v7l+ to /usr/share/rpikernelhack/./System.map-5.4.83-rt48-v7l+ by rpikernelhack'
Adding 'diversion of /boot/./kernel7l.img to /usr/share/rpikernelhack/./kernel7l.img by rpikernelhack'
Adding 'diversion of /boot/./config-5.4.83-rt48-v7l+ to /usr/share/rpikernelhack/./config-5.4.83-rt48-v7l+ by rpikernelhack'
Unpacking linux-image-5.4.83-rt48-v7l+ (5.4.83-rt48-v7l+-4) ...
Setting up linux-image-5.4.83-rt48-v7l+ (5.4.83-rt48-v7l+-4) ...
update-initramfs: Generating /boot/initrd.img-5.4.83-rt48-v7l+

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15 Jan 2021 01:06 - 15 Jan 2021 01:41 #195386 by alkabal
After apt-get upgrade usb boot killed.

Try again on the sdcard instal kernel and edit /boot/config-rt.txt but this file seem to be missing :
vmlinuz-5.4.83-rt48-v7l+
Last edit: 15 Jan 2021 01:41 by alkabal.

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15 Jan 2021 08:20 #195416 by tjtr33
Al
see
forum.linuxcnc.org/9-installing-linuxcnc...-2gb?start=20#195017
the usb fail on rpi-os is connected to memory
all rpi's fail at >=4meg
in the above forum posy i show a fix and where the fix came from
it works for me on my rpi4 4meg
thx
tomp

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