[Kernel-packages] [Bug 2002938] [NEW] Logitech webcam crashed the kernel
Public bug reported: This happens during a "Zoom" video conference call done within a virtual machine. Both the host and the guest OSes are Ubuntu 22.04. A few minutes after the video call started audio is lost, and a few seconds later the (guest) system crashes. The webcam used is a USB Logitech Webcam C270 which is connected to the VM as a USB passthrough (i.e. using the "Add new virtual hardware => USB host device" in virt-manager). Note that the "dmesg" attached is probably irrelevant so I attached the output of "journalctl --boot=..." of the relevant session. The kernel crash can be seen near the end of the log, look for the following lines: Jan 10 19:54:12 yariv-encrypted-ubuntu kernel: usb 1-4: cannot submit urb (err = -27) Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: usb 1-4: timeout: still 1 active urbs on EP #86 Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: [ cut here ] Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: URB submitted while active ... ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-58-generic 5.15.0-58.64 ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74 Uname: Linux 5.15.0-58-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: yariv 1897 F pulseaudio /dev/snd/controlC0: yariv 1897 F pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon Jan 16 09:06:56 2023 HibernationDevice: RESUME=UUID=1c38618d-3590-45c4-b960-ca9d157ad22f InstallationDate: Installed on 2019-02-26 (1419 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IwConfig: lono wireless extensions. ens3 no wireless extensions. docker0 no wireless extensions. MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcFB: 0 virtio_gpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-58-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-58-generic N/A linux-backports-modules-5.15.0-58-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.9 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2022-10-12 (95 days ago) dmi.bios.date: 04/01/2014 dmi.bios.release: 0.0 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.15.0-1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-bionic dmi.modalias: dmi:bvnSeaBIOS:bvr1.15.0-1:bd04/01/2014:br0.0:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:sku: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-bionic dmi.sys.vendor: QEMU ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy ** Attachment added: "journalctl of the relevant boot session" https://bugs.launchpad.net/bugs/2002938/+attachment/5641536/+files/freeze_issue.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2002938 Title: Logitech webcam crashed the kernel Status in linux package in Ubuntu: New Bug description: This happens during a "Zoom" video conference call done within a virtual machine. Both the host and the guest OSes are Ubuntu 22.04. A few minutes after the video call started audio is lost, and a few seconds later the (guest) system crashes. The webcam used is a USB Logitech Webcam C270 which is connected to the VM as a USB passthrough (i.e. using the "Add new virtual hardware => USB host device" in virt-manager). Note that the "dmesg" attached is probably irrelevant so I attached the output of "journalctl --boot=..." of the relevant session. The kernel crash can be seen near the end of the log, look for the following lines: Jan 10 19:54:12 yariv-encrypted-ubuntu kernel: usb 1-4: cannot submit urb (err = -27) Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: usb 1-4: timeout: still 1 active urbs on EP #86 Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: [ cut here ] Jan 10 19:54:13 yariv-encrypted-ubuntu kernel: URB submitted while active ... ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-58-generic 5.15.0-58.64 ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74 Uname: Linux 5.15.0-58-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: yariv 1897 F pulseaudio /dev/snd/controlC0: yariv 1897 F pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon Jan 16 09:06:56 2023 HibernationDevice: RESUME=UUID=1c38618d-3590-45c4-b960-ca9d157ad22f InstallationDate: Installed on 2019-02-26
[Kernel-packages] [Bug 1876449] Re: Apple external Trackpad event timestamps are jittery
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1876449
Title:
Apple external Trackpad event timestamps are jittery
Status in linux package in Ubuntu:
Fix Released
Bug description:
Using a vanilla installation of Ubuntu 20.04, the timestamps of input
events from my Apple "Magic Trackpad" - 1st generation, connected over
Bluetooth - are jittery.
This is a regression, the timestamps were fine when using Ubuntu
19.10.
I bisected the bug.
- The problem starts with upstream kernel commit 3b51c44bd693 ("Input: allow
drivers specify timestamp for input events"). After that commit, the same
timestamp is always emitted.
- This was partially fixed in commit 4370b231d100 ("Input: reset device
timestamp on sync"), however ever since then the timestamps are jittery.
The problem still exists in the current upstream 'master' (commit
c45e8bccecaf).
The following patch fixes the bug, however this is obviously a hack.
It effectively reverts commit 3b51c44bd693:
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 3cfd2c18eebd..8890195547d6 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1958,7 +1958,7 @@ ktime_t *input_get_timestamp(struct input_dev *dev)
{
const ktime_t invalid_timestamp = ktime_set(0, 0);
- if (!ktime_compare(dev->timestamp[INPUT_CLK_MONO], invalid_timestamp))
+ // if (!ktime_compare(dev->timestamp[INPUT_CLK_MONO],
invalid_timestamp))
input_set_timestamp(dev, ktime_get());
return dev->timestamp;
Steps to reproduce
--
I used the following script as a reproducer. It relies on libinput-
debug-events. This script measures the time delta between consecutive
input events, then prints a "histogram" of these deltas.
#!/bin/bash
# log file name
logFile=${1:-~/Downloads/`uname -r`}
echo logFile=$logFile
if [[ "$1" == '' ]]; then
echo record
# log some events
sudo libinput debug-events | grep POINTER | tee $logFile
fi
# process the results
lastN=0
for f in `cat $logFile | awk '{print $3}' | sed "s/s//g" | sed "s/+//g"`;
do
echo "$f-$lastN" | bc;
lastN=$f;
done | sort | uniq -c
1. Pair an external Apple Trackpad over Blutooth.
2. Run the above script
3. Move your finger in circles on the touchpad for a few seconds
4. Press ctrl+c
An example output of this script before the regression
--
2 .010
371 .011
127 .012
1 .876
The above output means that: 2 times the delta was 10ms, 371 times
11ms, 127 times 12ms and 1 time 876ms. This corresponds well with the
Trackpad's ~90Hz polling rate.
An example output of this script after the regression
-
3 .003
12 .004
16 .005
14 .006
21 .007
16 .008
20 .009
13 .010
359 .011
47 .012
20 .013
17 .014
21 .015
14 .016
16 .017
15 .018
2 .019
1 .020
38 .022
21 .023
1 1.060
I suspect that other input devices might be affected as well.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-28-generic 5.4.0-28.32
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: yariv 1783 F pulseaudio
CasperMD5CheckResult: skip
Date: Sat May 2 13:58:34 2020
InstallationDate: Installed on 2019-07-13 (293 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: Gigabyte Technology Co., Ltd. Z170X-UD5 TH
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-generic
root=UUID=6deee348-bb50-4b88-837b-108413e4d8f2 ro quiet splash
btusb.enable_autosuspend=0 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-28-generic N/A
linux-backports-modules-5.4.0-28-generic N/A
linux-firmware1.187
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-28 (3 days ago)
dmi.bios.date: 03/09/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F22g
dmi.board.asset.tag: Default string
dmi.board.name: Z170X-UD5 TH-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
