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Burt Reynolds
n00b
Joined: 15 Mar 2020
Posts: 4
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 Posted: Sun Mar 15, 2020 7:47 pm Post subject: RPI 3B+ LXQt 64 Bit with VC4 |
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The problem I am trying to solve is when my system boots without VC4 it boot without any problems. If I boot with VC4 X11 does not start.
I installed Gentoo 64 Bit on a RPI 3B+ with the following packages:
/var/lib/portage/world:
| Code: | app-admin/syslog-ng
dev-libs/libconfig
dev-libs/libmodbus
dev-qt/qtserialport
lxqt-base/lxqt-meta
net-analyzer/zabbix
sys-app/usbutils
sys-boot/rasberrypi-firmware
sys-kernel/raspberrypi-sources
sys-process/htop
x11-apps/mesa-progs
x11-apps/xinput-calibrator
x11-base/xorg-x11
x11-drivers/xf86-input-evdev
x11-drivers/xf86-input-keyboard
x11-drivers/xf86-input-mouse
x11-drivers/xf86-video-fbdev
x11-misc/x11vnc
x11-terms/qterminal |
My make.conf is:
| Code: |
# These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
CFLAGS="-O2 -pipe -march=armv8-a+crc"
CXXFLAGS="${CFLAGS}"
# WARNING: Changing your CHOST is not something that should be done lightly.
# Please consult https://wiki.gentoo.org/wiki/Changing_the_CHOST_variable before changing.
ARCH=arm64
CHOST="aarch64-unknown-linux-gnu"
# NOTE: This stage was built with the bindist Use flag enabled
PORTDIR="/usr/portage"
DISTDIR="/usr/portage/distfiles"
PKGDIR="/usr/portage/packages"
# This sets the language of build output to English.
# Please keep this setting intact when reporting bugs.
LC_MESSAGES=C
FEATURES="-pid-sandbox"
# Set logging
PORTAGE_ELOG_CLASSES="info wan error log qa"
PORT_LOGDIR=/var/log/portage/
MAKEOPTS="-j8"
USE="${ARCH} egl gles1 gles2 qt5 suid systemd udev udisks X
-consolekit -doc -gnome -gtk -gtk3 -ipv6 -man -pam -qt4 -sqlite"
GENTOO_MIRRORS="ftp://www.gtlib.gatech.edu/pub/gentoo
http://www.gtlib.gatech.edu/pub/gentoo
http://gentoo.mirrors.pair.com/
http://mirror.lug.udel.edu/pub/gentoo/"
ACCEPT_LICENSE="*"
ACCEPT_KEYWORDS="arm64 ~arm64"
LINGUAS="en en_US"
QEMU_USER_TARGETS="aarch64"
QEMU_SOFTMMU_TARGETS="aarch64"
INPUT_DEVICES="evdev mouse keyboard"
VIDEO_CARDS="fbdev vc4"
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I am using it for an embedded application that auto-logins in. To do this I followed these guides:
https://wiki.gentoo.org/wiki/LXQt
https://wiki.gentoo.org/wiki/X_without_Display_Manager
X11 autologin with systemd
/etc/systemd/system/x11.service
| Code: | [Unit]
After=systemd-user-sessions.service
[Service]
ExecStart=/sbin/agetty --autologin username --login-program /usr/local/sbin/x11login --noclear tty 38400
[Install]
WantedBy=multi-user.target |
/usr/local/sbin/x11login
| Code: | #!/bin/sh
exec /bin/login "${@}" START_X11=1 |
~/.bashrc
| Code: | if [[ ${START_X11} == 1 ]]; then
unset START_X11
exec xinit -- -nocursor
fi
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~/.xinitrc
When my config.txt is set so VC4 is not used X11 works just fine.
config.txt
| Code: | disable_overscan=1
hdmi_blanking=1
avoid_warnings=2
enable_uart=1 |
When I set my config.txt to X11 will not start:
| Code: | disable_overscan=1
hdmi_blanking=1
avoid_warnings=2
enable_uart=1
dtoverlay=vc4-fkms-v3d,cma-256
gpu_mem=16 |
I also tried using dtoverlay=vc4-kms-v3d and had the same error.
The error I get when using VC4 is:
| Code: | ...
[ 73.105] Module class: X.Org Video Driver
[ 73.105] ABI class: X.Org Video Driver, version 24.1
[ 73.105] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 73.105] (II) FBDEV: driver for framebuffer: fbdev
[ 73.105] (EE)
Fatal server error:
[ 73.111] (EE) parse_vt_settings: Cannot open /dev/tty0 (Permission denied)
[ 73.114] (EE)
[ 73.117] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 73.129] (EE) Please also check the log file at "/home/user/.local/share/xorg/Xorg.0.log" for additional information.
[ 73.132] (EE)
[ 73.136] (WW) xf86CloseConsole: KDSETMODE failed: Bad file descriptor
[ 73.136] (WW) xf86CloseConsole: VT_GETMODE failed: Bad file descriptor
[ 73.136] (EE) Server terminated with error (1). Closing log file. |
I found a forum post that said adding the user to the tty group could fix it but is was not recommended and a bad idea for security reasons. I tried it anyway just to see if it would fix it or not.
If I add the user to the tty group I get this error:
| Code: | ...
[ 493.099] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 493.099] (II) FBDEV: driver for framebuffer: fbdev
[ 493.100] (EE)
Fatal server error:
[ 493.106] (EE) xf86OpenConsole: Cannot open virtual console 2 (Permission denied)
[ 493.109] (EE)
[ 493.112] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 493.124] (EE) Please also check the log file at "/home/user/.local/share/xorg/Xorg.0.log" for additional information.
[ 493.127] (EE)
[ 493.131] (WW) xf86CloseConsole: KDSETMODE failed: Bad file descriptor
[ 493.131] (WW) xf86CloseConsole: VT_GETMODE failed: Bad file descriptor
[ 493.131] (EE) Server terminated with error (1). Closing log file.
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I have not been able to get passed this error message.
Anyone know how to get VC4 working with X11 and LXQt on the RPI 3B+ 64 Bit? |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54331
Location: 56N 3W
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| Posted: Sun Mar 15, 2020 8:03 pm Post subject: |
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Burt Reynolds,
Welcome to Gentoo.
What is the output of
Your error messages point to devtmpfs not mounted at /dev, devpts not mounted at /dev/pts, or mounted but with the wrong permissions, or possibly udev not runnnig.
The mouse and keyboard INPUT_DEVICES are not used if evdev works.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54331
Location: 56N 3W
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| Posted: Sun Mar 15, 2020 8:03 pm Post subject: |
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Moved from Desktop Environments to Gentoo on ARM.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Burt Reynolds
n00b
Joined: 15 Mar 2020
Posts: 4
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| Posted: Sun Mar 15, 2020 9:51 pm Post subject: |
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The output for mount is:
| Code: | root-rw on /rw type tmpfs (rw,relatime)
/dev/mmcblk0p3 on /ro type f2fs (ro,relatime,lazytime,background_gc=off,discard,no_heap,user_xattr,inline_xattr,acl,
inline_data,inline_dentry,extent_cache,mode=adaptive,active_logs=6,alloc_mode=reuse,fsync_mode=posix)
overlayfs-root on / type overlay (rw,relatime,lowerdir=/mnt/ro,upperdir=/mnt/rw/upper,workdir=/mnt/rw/work)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
devtmpfs on /dev type devtmpfs (rw,nosuid,size=361588k,nr_inodes=90397,mode=755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime) |
Since you are asking about mount I am going to add that I setup the OS to be read-only with this script.
| Code: | #!/bin/sh
# Read-only Root-FS for Raspian using overlayfs
# Version 1.0
#
# Created 2017 by Pascal Suter @ DALCO AG, Switzerland to work on Raspian as custom init script
# (raspbian does not use an initramfs on boot)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
#
# Tested with Raspbian mini, 2017-01-11
#
# This script will mount the root filesystem read-only and overlay it with a temporary tempfs
# which is read-write mounted. This is done using the overlayFS which is part of the linux kernel
# since version 3.18.
# when this script is in use, all changes made to anywhere in the root filesystem mount will be lost
# upon reboot of the system. The SD card will only be accessed as read-only drive, which significantly
# helps to prolong its life and prevent filesystem coruption in environments where the system is usually
# not shut down properly
#
# Install:
# copy this script to /sbin/overlayRoot.sh and add "init=/sbin/overlayRoot.sh" to the cmdline.txt
# file in the raspbian image's boot partition.
# I strongly recommend to disable swapping before using this. it will work with swap but that just does
# not make sens as the swap file will be stored in the tempfs which again resides in the ram.
# run these commands on the booted raspberry pi BEFORE you set the init=/sbin/overlayRoot.sh boot option:
# sudo dphys-swapfile swapoff
# sudo dphys-swapfile uninstall
# sudo update-rc.d dphys-swapfile remove
#
# To install software, run upgrades and do other changes to the raspberry setup, simply remove the init=
# entry from the cmdline.txt file and reboot, make the changes, add the init= entry and reboot once more.
#
# Update:
# Remove the loading of overlayfs modules, overlayfs is built into kernel.
# Added section to mount a custom partition with all the files being copied over to the newly mounted
# root-fs, then unmounting the partition and removing it from the fstab.
# Divided the script into functions and formatted script to make it more readable.
#############################################################
# #
# main and fail functions #
# #
#############################################################
main()
{
get_mount_points
mount_proc
mount_mnt_tmpfs
mount_custom
load_new_image
mount_overlay_fs
load_custom_files
unmount_custom
chroot_overlay
}
fail()
{
echo -e "$1"
/bin/bash
}
#############################################################
# #
# get mount points from the fstab #
# #
#############################################################
get_mount_points()
{
bootDev=`awk '$2 == "/boot" {print $1}' /etc/fstab`
bootMountOpt=`awk '$2 == "/boot" {print $4}' /etc/fstab`
bootFsType=`awk '$2 == "/boot" {print $3}' /etc/fstab`
rootDev=`awk '$2 == "/" {print $1}' /etc/fstab`
rootMountOpt=`awk '$2 == "/" {print $4}' /etc/fstab`
rootFsType=`awk '$2 == "/" {print $3}' /etc/fstab`
customDev=`awk '$2 == "/mnt/custom" {print $1}' /etc/fstab`
customMountOpt=`awk '$2 == "/mnt/custom" {print $4}' /etc/fstab`
customFsType=`awk '$2 == "/mnt/custom" {print $3}' /etc/fstab`
}
#############################################################
# #
# mount the proc file #
# #
#############################################################
mount_proc()
{
mount -t proc proc /proc
if [ $? -ne 0 ]; then
fail "ERROR: could not mount proc"
fi
}
#############################################################
# #
# mount the tmpfs to /mnt #
# #
#############################################################
mount_mnt_tmpfs()
{
mount -t tmpfs inittemp /mnt
if [ $? -ne 0 ]; then
fail "ERROR: could not create a temporary filesystem to mount the base filesystems for overlayfs"
fi
}
#############################################################
# #
# check for new image and load if exists. #
# reboot when done loading. #
# #
#############################################################
load_new_image()
{
if [ -e /mnt/custom/image.tar.gz ]; then
sleep 2
echo "*************************************************************************"
echo "* *"
echo "* Loading new image............ *"
echo "* *"
echo "*************************************************************************"
make_dir /mnt/custom/image
mv /mnt/custom/image.tar.gz /mnt/custom/image/
cd /mnt/custom/image
echo "Extracting image..."
tar xpf image.tar.gz --xattrs-include='*.*' --numeric-owner --checkpoint=.500 2>/dev/null
echo ""
rm image.tar.gz
cd /
echo "Rsyncing root partition"
mount -t ${rootFsType} -o ${rootMountOpt},rw,remount ${rootDev} /
if [ $? -ne 0 ]; then
fail "ERROR: could not remount the root filesystem"
fi
rsync_dir bin
rsync_dir etc
rsync_dir home
rsync_dir lib
rsync_dir lib64
rsync_dir media
rsync_dir opt
rsync_dir root
rsync_dir run
rsync_dir sbin
rsync_dir srv
rsync_dir sys
rsync_dir tmp
rsync_dir usr
rsync_dir var
echo "Rsyncing boot partition"
mount -t ${bootFsType} -o ${bootMountOpt},rw ${bootDev} /boot
if [ $? -ne 0 ]; then
fail "ERROR: could not mount boot filesystem"
fi
rsync -avc --delete-during --exclude 'config.txt' /mnt/custom/image/boot /
sync
umount /boot
rm -r /mnt/custom/image
unmount_custom
echo "*************************************************************************"
echo "* *"
echo "* Image loaded rebooting....... *"
echo "* *"
echo "*************************************************************************"
sleep 5
reboot -f
exit
fi
}
#############################################################
# #
# mount custom #
# #
#############################################################
rsync_dir()
{
local source=/mnt/custom/image/$1
echo "Syncing /${1}"
# return -1 if missing param
if [[ -z ${source} ]]; then
return -1
fi
make_dir /${1}
rsync -av --delete-during ${source} /
sync
}
#############################################################
# #
# mount custom #
# #
#############################################################
mount_custom()
{
make_dir /mnt/custom
mount -t ${customFsType} -o ${customMountOpt},rw ${customDev} /mnt/custom
if [ $? -ne 0 ]; then
fail "ERROR: could not mount the custom filesystem"
fi
}
#############################################################
# #
# unmount custom #
# #
#############################################################
unmount_custom()
{
umount /mnt/custom
rmdir -r /mnt/custom
}
#############################################################
# #
# mount overlay file system read-only #
# #
#############################################################
mount_overlay_fs()
{
create_mount_rw_dir
create_mount_ro_dir
make_dir /mnt/newroot
mount -t overlay -o lowerdir=/mnt/ro,upperdir=/mnt/rw/upper,workdir=/mnt/rw/work overlayfs-root /mnt/newroot
if [ $? -ne 0 ]; then
fail "ERROR: could not mount overlayFS"
fi
}
#############################################################
# #
# create read-write partition #
# #
#############################################################
create_mount_rw_dir()
{
make_dir /mnt/rw
mount -t tmpfs root-rw /mnt/rw
if [ $? -ne 0 ]; then
fail "ERROR: could not create tempfs for upper filesystem"
fi
make_dir /mnt/rw/upper
make_dir /mnt/rw/work
}
#############################################################
# #
# create read-only partition #
# #
#############################################################
create_mount_ro_dir()
{
make_dir /mnt/ro
mount -t ${rootFsType} -o ${rootMountOpt},ro ${rootDev} /mnt/ro
if [ $? -ne 0 ]; then
fail "ERROR: could not ro-mount original root partition"
fi
}
#############################################################
# #
# copy over custom files #
# #
#############################################################
load_custom_files()
{
cp -a /mnt/custom/* /mnt/newroot/
}
#############################################################
# #
# chroot into the new overlay root fs #
# #
#############################################################
chroot_overlay()
{
# create mountpoints inside the new root filesystem-overlay
make_dir /mnt/newroot/ro
make_dir /mnt/newroot/rw
# remove root mount from fstab (this is already a non-permanent modification)
grep -v "$rootDev" /mnt/lower/etc/fstab | grep -v "$customDev" > /mnt/newroot/etc/fstab
# change to the new overlay root
cd /mnt/newroot
pivot_root . mnt
exec chroot . sh -c "$(cat <<END
# move ro and rw mounts to the new root
mount --move /mnt/mnt/ro/ /ro
if [ $? -ne 0 ]; then
echo "ERROR: could not move ro-root into newroot"
/bin/bash
fi
mount --move /mnt/mnt/rw /rw
if [ $? -ne 0 ]; then
echo "ERROR: could not move tempfs rw mount into newroot"
/bin/bash
fi
# unmount unneeded mounts so we can unmout the old readonly root
umount /mnt/mnt
umount /mnt/proc
umount /mnt/dev
umount /mnt
# continue with regular init
exec /usr/lib/systemd/systemd
END
)"
}
#############################################################
# #
# create directory if it does not exist #
# #
#############################################################
make_dir() {
local dir=$1
# return -1 if missing directory param
if [[ -z ${dir} ]]; then
return -1
fi
# create dir if it does not exist
if [[ ! -d ${dir} ]]; then
echo "${FUNCNAME[0]}(): creating director ${dir}"
mkdir -p ${dir}
if [[ $? -ne 0 ]]; then
echo "${FUNCNAME[0]}(): failed to create ${dir}"
fi
return $?
fi
return 0
}
#############################################################
# #
# call main function #
# #
#############################################################
main |
Wrapped a long line to make the forum layout behave. —Chiitoo |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54331
Location: 56N 3W
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| Posted: Sun Mar 15, 2020 10:28 pm Post subject: |
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Burt Reynolds,
| Code: | # Set logging
PORTAGE_ELOG_CLASSES="info wan error log qa" |
wan is a typo for warn. I did that that too. :)
Everything looks OK so far.
Your dmesg output will be interesting. That will be too big for a post, so it needs to go to a pastebin.
What do you have in cmdline.txt ?
Its not really a read only root you have there, root is read/write due to the overlay filesystem doing copy on write.
When you write to a file, overlay filesystem make a new file in RAM and hides the original.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Burt Reynolds
n00b
Joined: 15 Mar 2020
Posts: 4
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| Posted: Mon Mar 16, 2020 1:10 pm Post subject: |
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Thanks for the info on the typo.
My cmdline.txt is:
| Code: | | dwc_otg.lpm_enable=0 root=/dev/mmcblk0p3 rootfstype=f2fs elevator=deadline rootwait init=/sbin/overlayRoot.sh |
This is my dmesg
http://codepad.org/V8u3D2MD
As I am using systemd this is my journalctl
http://codepad.org/0VDBfibL |
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Burt Reynolds
n00b
Joined: 15 Mar 2020
Posts: 4
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| Posted: Thu Mar 19, 2020 1:52 am Post subject: |
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Additional data:
Realized that the permissions error was stating tty0, when X should be running on tty7 so I decided to change ~/.bashrc to (making it use tty7):
| Code: | -- exec xinit -- -nocursor
++ exec xinit -- vt7 -nocursor |
I get:
| Code: | UnloadModule: "fbdev"
Unloading fbdev
UnloadSubModule: "fbdevhw"
Unloading fbdevhw
modeset(0): drmSetMaster failed: Permission denied
Fatal server error:
AddScreen/ScreenInit failed for driver 0 |
When I run "X -configure" I get this error message:
| Code: | List of video drivers:
modesetting
fbdev
No devices to configure. Configuration failed. |
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Gentoo on ARM
