For all Linux beginners that don't want to compile their own kernel:
It seems that it's already possible to download and install a pre-
compiled kernel via GUI:
Simply follow these instructions: https://9to5linux.com/you-can-now-
install-linux-kernel-6-5-on-ubuntu-heres-how
You'll need to enter
Hey paul, this issue is about missing kernel modules, not about anything
in the core22 snap ...
Part of the kernel stuff is being handled already in
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2024443
though ...
** Summary changed:
- Core 22 is missing Realtek and TI drivers,
Public bug reported:
While included in UC20, the mt7601u.ko and rtl8192cu.ko seem to be
missing in UC22 kernels, please move it back in place, our customers
that run UC20 or tested with UC20 will expect their hardware to keep
working in UC22 installs
** Affects: linux-raspi (Ubuntu)
Public bug reported:
After a graphics driver update my desktop would not progress past the boot
splash screen and hangs on a blinking cursor.
Ubuntu recovery mode options and dpkg rebuilds did not resolve the
issue.
I ended up being able to get to the desktop session by using "nomodeset"
but
Public bug reported:
i recently recommended a TP-Link TL-WN722N to an UbuntuCore customer
asking for a recommendation of a USB wifi adapter with external antenna
for the RPi since i use this card in various RPi projects ...
trying it on UC22 it turns out that the module driving this card is not
I can confirm Jan Kellermann's findings on ubuntu 20.04 with linux-
generic-hwe-20.04 that version 5.15.0.66.73~20.04.27 from focal proposed
solves the problem. Thank you so much.
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Issue solved here with 5.15.0-56-lowlatency.
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https://bugs.launchpad.net/bugs/1997140
Title:
No video output with Kernel 5.15.0-53-lowlatency
Status in linux package in
** Attachment added: "uname-a.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1997140/+attachment/5631545/+files/uname-a.log
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** Attachment added: "lspci-vvnn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1997140/+attachment/5631546/+files/lspci-vvnn.log
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** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1997140/+attachment/5631547/+files/dmesg.log
** Description changed:
Since kernel update to 5.15.0-53-lowlatency, I get no output at all
anymore on the monitor. The monitor says 'No Signal'. Also when
Public bug reported:
Since kernel update to 5.15.0-53-lowlatency, I get no output at all
anymore on the monitor. The monitor says 'No Signal'. Also when trying
to change to a console with CTRL-ALT-F1 no output.
When booting to the still installed previous version
5.15.0-52-lowlatency, all works
** Also affects: linux (Ubuntu Kinetic)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1994126
Title:
NULL pointer dereference in
I have a HP ZBook and 5.19 has not solved this for me. I cannot use my
external monitor unless I revert back to 5.10, I have not attempted
5.13, but I don't think it matters that much, I would just like to use
the up-to-date kernels if possible :)
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The next step to resolve this issue is to capture a trace of the USB bus
with a logic analyzer.
Does anyone affected by this problem happen to have access to a logic analyzer?
If so, post a trace here and someone can see if it is the device, the cable,
or the computer misbehaving.
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593993/+files/PulseList.txt
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** Attachment added: "AlsaDevices.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593973/+files/AlsaDevices.txt
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** Attachment added: "Card0.Amixer.values.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593978/+files/Card0.Amixer.values.txt
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593995/+files/WifiSyslog.txt
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** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593996/+files/acpidump.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "AudioDevicesInUse.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593976/+files/AudioDevicesInUse.txt
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** Attachment added: "PciMultimedia.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593987/+files/PciMultimedia.txt
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** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593983/+files/Lspci-vt.txt
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** Attachment added: "Lsusb-t.txt"
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** Attachment added: "Card1.Amixer.values.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593980/+files/Card1.Amixer.values.txt
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** Attachment added: "ProcCpuinfo.txt"
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** Attachment added: "ProcModules.txt"
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** Attachment added: "UdevDb.txt"
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** Attachment added: "ProcCpuinfoMinimal.txt"
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** Attachment added: "ProcInterrupts.txt"
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** Attachment added: "Card0.Codecs.codec.0.txt"
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** Attachment added: "Lsusb.txt"
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** Attachment added: "ArecordDevices.txt"
https://bugs.launchpad.net/bugs/1976325/+attachment/5593975/+files/ArecordDevices.txt
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** Attachment added: "AplayDevices.txt"
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** Tags added: apport-collected vanessa
** Description changed:
Di Mai 31 04:44:19 2022]
[Di Mai 31 04:44:19 2022] UBSAN: array-index-out-of-bounds in
Public bug reported:
Di Mai 31 04:44:19 2022]
[Di Mai 31 04:44:19 2022] UBSAN: array-index-out-of-bounds in
Hi all!
I've installed Ubuntu 22.04 for real and using the proprietary driver in
fact solves the screen issue.
However, in my opinion, someone who wants to try Ubuntu from a live
stick should not need to worry about such things (e. g. also try using
safe graphics mode). That person is likely to
@Daniel
I'll gladly do that, but I won't get my hands on that computer before
Thursday and I'd need to either figure out how to create a persistent
live stick or to install 22.04 on a separate partition or drive.
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** Changed in: linux-raspi (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1968469
Title:
ILITEK_ILI9881C panel driver missing
Status
Public bug reported:
the current 5.15.0-1004-raspi kernel for 22.04 does not enable the
CONFIG_DRM_PANEL_ILITEK_ILI9881C=m option, thus such touchscreen panels
can not be used
the cutiepi (https://cutiepi.io/) project does use this hardware for their pi
based tablets.
booting ubuntu 22.04 on
Public bug reported:
To attach TFT touchscreens the pi-foundation kernel ships the fbtft
devicetree overlay along with rpi-display.
While you can attach a stand-alone TFT display just fine when only using
rpi-display to provide the drivers with hardcoded GPIO assignments, it
gets extremely
Public bug reported:
just pop up with error message
ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: nvidia-kernel-source-450 450.119.03-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.11.0-46.51~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-46-generic x86_64
NonfreeKernelModules:
Hi Matthew,
another big thank you from my side for the quick and perfect analysis!
Being given the necessary instructions I will be more than happy to test
the fixed kernel.
Oliver
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...
Oliver
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https://bugs.launchpad.net/bugs/1956867
Title:
BUG: kernel NULL pointer dereference, address: 000c
Status in linux package in Ubuntu:
New
Bug
Public bug reported:
This bug has been introduced with the upgrade of linux-
image-5.13.0-22-generic to linux-image-5.13.0-23-generic.
One effect - the only one observed so far - is that my system does not
reboot or shutdown anymore; a hard power cycle is required to recover
for the next system
note that i did never really follow up with that setup in the end but i
found out that even modern SSDs (not only rotary HDDs) usually draw more
power than the USB3 port can provide, you will need an Y-Cable or
external power supply ... while i can not fully confirm (due to lack of
time and
hirsute does not have Ubuntu Core images ;)
It seems to be solvable via a simple defconfig change according to:
https://github.com/raspberrypi/linux/issues/4205
We have at least one UC customer implementing a CM4 baseboard with TPM
for Full disk encryption and secureboot in UC20, for this the
Public bug reported:
There is a timing issue when using the CM4 with the official CM4 IO
baseboard.
The CM4 baseboard comes with a built in rtc and a battery holder by
default, to enable it a devicetree overlay needs to be enabled and a
matching module gets loaded ...
$ tail -2
Public bug reported:
Trying to use a default USB boot on a Raspberry Pi using either an USB3
UAS SSD enclosure or even a simple USB 2 stick fails (due to the missing
console output it simply hangs indefinitely with a black screen
Public bug reported:
when booting UC20 on a Pi4 the screen backlight is completely off and no
signal is produced.
inspecting the boot a little closer it seems the necessary modules for
bringing up the vc4 framebuffer are not included in the initramfs on
ubuntu core. once they get loaded (after
Public bug reported:
supposedly the bluetooth firmware from:
https://launchpad.net/ubuntu/+source/linux-firmware-
raspi2/3-0ubuntu1~20.04.1
should be shipped in the latest pi-kernel snap in the edge/beta channel.
the BCM4345C5.hcd (as mentioned in the last changelog entry above) is
essential
buntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate:
ure: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-01 (24
PID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-01 (247 days ago)
InstallationMedia
vicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-01 (24
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
ounds similar for other
kernel.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5Chec
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
ortVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
mType: Bug
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelea
ortVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
ortVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
ortVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
ortVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
buntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
Instal
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
n: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: oliver 2033 F pulseaudio
/dev/snd/controlC0: oliver 2033 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ub
+ ApportVersion: 2.20.11-0ubuntu27.13
+ Architecture: amd64
+ AudioDevicesInUse:
+ USERPID ACCESS COMMAND
+ /dev/snd/controlC2: oliver 2033 F pulseaudio
+ /dev/snd/controlC0: oliver 2033 F pulseaudio
+ CasperMD5CheckResult: skip
+ CurrentDesktop: XFCE
+ DistroRelease: Ubuntu
Public bug reported:
Package: linux-image-5.4.0.56.lowlatency / Focal Ubuntu Studio 20.04
WLan is working PCI Ethernet not.
[ 11.223573] genirq: Flags mismatch irq 18. 00010080 (enp3s1) vs. 2080
(uhci_hcd:usb4)
[ 11.299519] genirq: Flags mismatch irq 16. 00010080 (ens32) vs. 2080
so this is indeed not an issue with the modules but with the kernel
itself and the support for sas, uas or the enclosure services.
i test-built all tags from https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux-raspi/+git/focal/refs/tags from 1023.26
going backwards and found that it
the config option seems to be:
CONFIG_VIDEO_CODEC_BCM2835=m
** Also affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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Public bug reported:
I don't know any more sorry. John
ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: linux-oracle-tools-5.4.0-1025 (not installed)
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
I issued the same bug.
Creating the file /etc/sysctl.d/90-override.conf with the input kernel.pid_max
= 32768 solved the issue for me.
Thanks for the advice!
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We have a Lenovo ThinkBook 15-IML and finally got its touchpad working, thanks
to ferenc-szabo!
He wrote a solution in his comments #66 and #86 (use both!) on
https://bugs.launchpad.net/bugs/1861610
Give it a try, and then please give feedback! The more people it helps
the more it's worth to
@Ferenc, thank you!!
Your comments #66 and #86 finally made the touchpad WORKING!
We have a Lenovo ThinkBook 15-IML with Linux Mint 20 MATE (based on
Ubuntu 20.04) and kernel 5.4.0-42.
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Hello.
Maybe following is helpful information.
I also have a Grabster AV 350 MX. I used this 350 yesterday for the first time
under Linux "ubuntu 16.04 LTS" (Kernel version:
oliver:~$ uname -srm
Linux 4.4.0-186-generic x86_64).
And the grabbing of a 30 second clip (until now I wa
i'll try over the weekend ...
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https://bugs.launchpad.net/bugs/1881623
Title:
USB support missing in initrd makes booting core with writable on USB
impossible
This bug report got stuck with wrong "Fix Released"!
@kmously and @vicamo:
Please could you set the status back to "In Progress"?
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in fact it seems like in 5.3 USB is not working at all !!! i verified
that today ...
my self-built kernel uses the focal 5.4 branch where USB works fine
then:
https://github.com/ogra1/linux-raspberrypi-
org/blob/master/snap/snapcraft.yaml
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also note that the fabrica appliance you linked uses a re-built kernel
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https://bugs.launchpad.net/bugs/1881623
Title:
USB support missing in initrd makes booting
hmm, i wonder why they dont load then ?
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Title:
USB support missing in initrd makes booting core with writable on USB
I just found that the kernels above do have an elan_i2c.ko with
"ELAN0634" by issuing:
for KO in $(locate elan_i2c) ; do strings -f $KO | grep ELAN0634 ; done
Nevertheless this touchpad still does not work with Ubuntu :-(
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I also tested kernel 5.4.0-38, 5.3.0-59 and 4.15.0-106 without success.
I confirm that the touchpad on our Lenovo ThinkBook 15 IIL does not work. And
it is not listed by "xinput" either. I tried many suggestions with BIOS
settings, kernel parameters and reloading modules.
Like Brian (comment
this is definitely a regression, mounting partitions should work ...
marking as critical.
** Changed in: linux-raspi2 (Ubuntu)
Importance: Undecided => Critical
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** Also affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1881623
Title:
USB support missing in initrd
** Description changed:
when using a gadget.yaml like:
volumes:
pi4-system-boot:
schema: mbr
bootloader: u-boot
structure:
- type: 0C
filesystem: vfat
filesystem-label: system-boot
size: 512M
content:
-
** Description changed:
when using a gadget.yaml like:
volumes:
pi4-system-boot:
schema: mbr
bootloader: u-boot
structure:
- type: 0C
filesystem: vfat
filesystem-label: system-boot
size: 512M
content:
-
Public bug reported:
when using a gadget.yaml like:
volumes:
pi4-system-boot:
schema: mbr
bootloader: u-boot
structure:
- type: 0C
filesystem: vfat
filesystem-label: system-boot
size: 512M
content:
- source: boot-assets/
adding bionic since we're supposed to fully support the pi4 there too
** Also affects: linux-raspi (Ubuntu Bionic)
Importance: Undecided
Status: New
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I'm also having this issue on 19.04. Only happens when i'm using 2
screens. the cursor is a duplicate of the real one, ie it hanges to the
text select cursor shape when i'm highlighting text, and it changes to
the hand-pointer when hovering over a hyperlink.
the duplicate goes away if i
Also a problem on my MSI GS43VR for 19.10
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https://bugs.launchpad.net/bugs/1803600
Title:
Elantech - Touchpad not working after upgrading to 18.10 from 18.04
Status in
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