Stylus stopped working after kernel update

Support
1

I’m using Manjaro on a Lenovo Yoga C940-14IIL, which has a built-in stylus. I updated the kernel to 5.15.19-1, and I found that the pen stopped working. (It either won’t charge or won’t write, I can’t tell.) This also occurs on 5.16.5-1. Is anyone else experiencing this? I couldn’t find this reported here or on the kernel bugzilla.

I didn’t report it until now because I wanted to see if it would get resolved by a newer kernel, but now the last version where the stylus works (5.14.21-2) is unsupported.

2

Did you try 5.10 ?

How to increase your chances of solving your issue:

Please provide Information:

1 Like
3

5.10 works fine, yes.

output of inxi (w/o sudo) 
System:
  Kernel: 5.14.21-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.14-x86_64
    root=UUID=d3efef34-21d6-40f2-bcb1-45659309abf7 ro quiet
    cryptdevice=UUID=cc326c60-c5b9-4d50-a6df-f5b90bdee7ed:luks-cc326c60-c5b9-4d50-a6df-f5b90bdee7ed
    root=/dev/mapper/luks-cc326c60-c5b9-4d50-a6df-f5b90bdee7ed apparmor=1
    security=apparmor
    resume=/dev/mapper/luks-33a43cc8-9d9d-495e-8e34-d79c9650db2d
    udev.log_priority=3
  Desktop: Xfce 4.16.0 tk: Gtk 3.24.29 info: xfce4-panel wm: xfwm 4.16.1
    vt: 7 dm: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Convertible System: LENOVO product: 81Q9 v: Lenovo Yoga C940-14IIL
    serial: <superuser required> Chassis: type: 31 v: Lenovo Yoga C940-14IIL
    serial: <superuser required>
  Mobo: LENOVO model: LNVNB161216 v: SDK0J40709 WIN
    serial: <superuser required> UEFI: LENOVO v: AUCN57WW date: 08/18/2020
Battery:
  ID-1: BAT1 charge: 16.7 Wh (59.4%) condition: 28.1/60.0 Wh (46.8%)
    volts: 7.8 min: 7.7 model: Celxpert BASE-BAT type: Li-poly serial: <filter>
    status: N/A
Memory:
  RAM: total: 15.2 GiB used: 4.23 GiB (27.8%)
  RAM Report:
    permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i7-1065G7 bits: 64 type: MT MCP arch: Ice Lake
    family: 6 model-id: 0x7E (126) stepping: 5 microcode: 0xA8
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 320 KiB desc: d-4x48 KiB; i-4x32 KiB L2: 2 MiB desc: 4x512 KiB L3: 8 MiB
    desc: 1x8 MiB
  Speed (MHz): avg: 1213 high: 1280 min/max: 400/3900 scaling:
    driver: intel_pstate governor: powersave cores: 1: 1256 2: 1280 3: 1201
    4: 1201 5: 1200 6: 1201 7: 1224 8: 1142 bogomips: 23968
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 avx512_bitalg avx512_vbmi2
    avx512_vnni avx512_vpopcntdq avx512bw avx512cd avx512dq avx512f avx512ifma
    avx512vbmi avx512vl bmi1 bmi2 bts clflush clflushopt cmov constant_tsc
    cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms
    est f16c flexpriority flush_l1d fma fpu fsgsbase fsrm fxsr gfni ht hwp
    hwp_act_window hwp_epp hwp_notify hwp_pkg_req ibpb ibrs ibrs_enhanced ida
    intel_pt invpcid invpcid_single lahf_lm lm mca mce md_clear mmx monitor
    movbe msr mtrr nonstop_tsc nopl nx ospke pae pat pbe pcid pclmulqdq pdcm
    pdpe1gb pebs pge pku pln pni popcnt pse pse36 pts rdpid rdrand rdseed
    rdtscp rep_good sdbg sep sgx sgx_lc sha_ni smap smep split_lock_detect ss
    ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc
    tsc_adjust tsc_deadline_timer tsc_known_freq umip vaes vme vmx vnmi
    vpclmulqdq vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl and seccomp
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel Iris Plus Graphics G7 vendor: Lenovo driver: i915 v: kernel
    ports: active: eDP-1 empty: DP-1,DP-2,DP-3 bus-ID: 00:02.0
    chip-ID: 8086:8a52 class-ID: 0300
  Device-2: Acer Integrated Camera type: USB driver: uvcvideo bus-ID: 3-1:2
    chip-ID: 5986:2115 class-ID: 0e02
  Display: x11 server: X.Org v: 1.21.1.3 compositor: xfwm v: 4.16.1 driver:
    X: loaded: intel gpu: i915 display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
    s-diag: 582mm (22.9")
  Monitor-1: eDP1 mapped: eDP-1 model: LG built: 2018 res: 1920x1080 hz: 60
    dpi: 157 gamma: 1.2 size: 310x170mm (12.2x6.7") diag: 355mm (14")
    ratio: 16:9 modes: 1920x1080
  Message: Unable to show GL data. Required tool glxinfo missing.
Audio:
  Device-1: Intel Ice Lake-LP Smart Sound Audio vendor: Lenovo
    driver: sof-audio-pci-intel-icl
    alternate: snd_hda_intel,snd_sof_pci_intel_icl bus-ID: 00:1f.3
    chip-ID: 8086:34c8 class-ID: 0401
  Sound Server-1: ALSA v: k5.14.21-2-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.20 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.47 running: yes
Network:
  Device-1: Intel Ice Lake-LP PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:34f0 class-ID: 0280
  IF: wlp0s20f3 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  IF-ID-1: tailscale0 state: unknown speed: 10 Mbps duplex: full mac: N/A
  IP v4: <filter> scope: global
  IP v6: <filter> scope: global
  IP v6: <filter> virtual: stable-privacy scope: link
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel AX201 Bluetooth type: USB driver: btusb v: 0.8
    bus-ID: 3-10:4 chip-ID: 8087:0026 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 3 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: see --recommends
Logical:
  Message: No logical block device data found.
  Device-1: luks-cc326c60-c5b9-4d50-a6df-f5b90bdee7ed maj-min: 254:0
    type: LUKS dm: dm-0 size: 936.84 GiB
  Components:
  p-1: nvme0n1p2 maj-min: 259:2 size: 936.84 GiB
  Device-2: luks-33a43cc8-9d9d-495e-8e34-d79c9650db2d maj-min: 254:1
    type: LUKS dm: dm-1 size: 16.72 GiB
  Components:
  p-1: nvme0n1p3 maj-min: 259:3 size: 16.73 GiB
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 953.87 GiB used: 215.74 GiB (22.6%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: MZVLB1T0HBLR-000L2 size: 953.87 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter>
    rev: 3L1QEXF7 temp: 39.9 C scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 936.84 GiB size: 921.14 GiB (98.32%)
    used: 215.74 GiB (23.4%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-cc326c60-c5b9-4d50-a6df-f5b90bdee7ed label: N/A
    uuid: d3efef34-21d6-40f2-bcb1-45659309abf7
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 484 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A
    uuid: E0D5-5D66
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 16.72 GiB used: 0 KiB (0.0%)
    priority: -2 dev: /dev/dm-1 maj-min: 254:1
    mapped: luks-33a43cc8-9d9d-495e-8e34-d79c9650db2d label: N/A
    uuid: 795f59fa-23d1-4304-bf84-d78b86253e7d
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 1 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-3: 3-0:1 info: Hi-speed hub with single TT ports: 12 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 3-1:2 info: Acer Integrated Camera type: Video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 5986:2115
    class-ID: 0e02
  Device-2: 3-5:3 info: Synaptics type: <vendor specific> driver: N/A
    interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 06cb:00be
    class-ID: ff00 serial: <filter>
  Device-3: 3-10:4 info: Intel AX201 Bluetooth type: Bluetooth driver: btusb
    interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 8087:0026
    class-ID: e001
  Hub-4: 4-0:1 info: Super-speed hub ports: 6 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 53.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 327 Uptime: 6h 44m wakeups: 29720 Init: systemd v: 250
  tool: systemctl Compilers: gcc: 11.2.0 clang: 13.0.1 Packages: 1409
  pacman: 1382 lib: 400 flatpak: 11 snap: 16 Shell: Bash v: 5.1.16
  running-in: xfce4-terminal inxi: 3.3.13
4

So i suggest keeping 2 kernels (at least)

  • 5.10 for working with it
  • 5.15 for trying from time to time
  • maybe 5.16 or others for experiments

And switching to 5.15 when it is ready :wink:

5

How can I get this information to someone who will be able to patch the issue? Just report it on the bugzilla?

6

I have no experience with that. :man_shrugging: