I can also confirm that the touchscreen and stylus are working again on
my Lenovo Yoga C740 on the recently released version 5.8.0-49. I believe
we can consider this fixed.
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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*** This bug is a duplicate of bug 1919342 ***
https://bugs.launchpad.net/bugs/1919342
** This bug has been marked a duplicate of bug 1919342
Stylus and touchscreen not working in kernel 5.8.0-45
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I believe this is going to be fixed in 5.8.0-49 which is in 'proposed'
status for Groovy.
https://bugs.launchpad.net/ubuntu/+source/linux/5.8.0-49.55
"HID: wacom: Correct NULL dereference on AES pen proximity"
This corresponds to the following upstream bug reports:
Some details not pointed out in the original post: On my Lenovo Yoga
C740, the touchscreen briefly works after booting, but will cease to
work immediately after the stylus is moved into the proximity of the
screen.
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*** This bug is a duplicate of bug 1919342 ***
https://bugs.launchpad.net/bugs/1919342
** This bug has been marked a duplicate of bug 1919342
Stylus and touchscreen not working in kernel 5.8.0-45
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This is not yet fixed in 5.8.0-48.
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https://bugs.launchpad.net/bugs/1919342
Title:
Stylus and touchscreen not working in kernel 5.8.0-45
Status in linux package in
apport information
** Attachment added: "VarLogDistupgradeMainlog.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477670/+files/VarLogDistupgradeMainlog.txt
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** Attachment added: "VarLogDistupgradeLspcitxt.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477669/+files/VarLogDistupgradeLspcitxt.txt
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** Attachment added: "VarLogDistupgradeAptclonesystemstate.tar.gz"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477666/+files/VarLogDistupgradeAptclonesystemstate.tar.gz
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477664/+files/UdevDb.txt
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** Attachment added: "VarLogDistupgradeAptlog.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477667/+files/VarLogDistupgradeAptlog.txt
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477671/+files/WifiSyslog.txt
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** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477663/+files/RfKill.txt
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** Attachment added: "VarLogDistupgradeAptHistorylog.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477665/+files/VarLogDistupgradeAptHistorylog.txt
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** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477672/+files/acpidump.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Summary changed:
- stylus for Acer Spin 5 stopped working on version 45 of Ubuntu
apport information
** Attachment added: "VarLogDistupgradeApttermlog.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477668/+files/VarLogDistupgradeApttermlog.txt
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** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477662/+files/PulseList.txt
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477660/+files/ProcInterrupts.txt
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477659/+files/ProcEnviron.txt
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477661/+files/ProcModules.txt
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** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477654/+files/Lspci-vt.txt
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** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477652/+files/IwConfig.txt
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** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477649/+files/CRDA.txt
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apport information
** Attachment added: "Lsusb-t.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477655/+files/Lsusb-t.txt
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** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477648/+files/AlsaInfo.txt
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** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477650/+files/CurrentDmesg.txt
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** Attachment added: "Lsusb-v.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477656/+files/Lsusb-v.txt
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** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477658/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477653/+files/Lspci.txt
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** Attachment added: "PaInfo.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477657/+files/PaInfo.txt
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** Attachment added: "CurrentDmesg.txt.txt"
https://bugs.launchpad.net/bugs/1919342/+attachment/5477651/+files/CurrentDmesg.txt.txt
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: julian 1864 F pulseaudio
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.10
InstallationDate:
Also happening on my Lenovo Yoga C740. Added this to package "linux"
because "ubuntu-release-upgrader" has nothing to do with this. Reverting
the kernel back to 5.8.0-44 fixes the problem.
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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