Dell XPS15 9550 - Fn keys weird behavious

Support
1

I have a similar problem with the Fn keys on my Dell XPS15 (9550) running Manjaro KDE. Sometimes i cant change the brightness with said Fn keys and the power button does not work, like mentioned in this thread.

but when i press Fn+Ins my laptop goes into hibernation (this key should be unset). When i come back from hibernation my brightness UP and DOWN key and the power button are working again. It is kind of annoying.
I read many threads about problems with brigtness UP + DOWN and power buttons but never heard of Fn+Ins working as a workaround.

Does anyone have an idea what could cause this behavior?

2

:+1: Welcome to Manjaro! :+1:

  1. Please read this:
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  2. An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information for us to be able to help you. (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
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:+1:

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3

here is my inxi output

System:
  Kernel: 5.13.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.13-x86_64 
  root=UUID=00b0a1cd-1f81-40a1-b607-4ff5d8dd5829 rw quiet splash apparmor=1 
  security=apparmor udev.log_priority=3 
  Desktop: KDE Plasma 5.22.5 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 
  dm: SDDM Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Laptop System: Dell product: XPS 15 9550 v: N/A serial: <filter> 
  Chassis: type: 9 serial: <filter> 
  Mobo: Dell model: 0N7TVV v: A01 serial: <filter> UEFI-[Legacy]: Dell 
  v: 1.8.0 date: 07/18/2018 
Battery:
  ID-1: BAT0 charge: 57.8 Wh (100.0%) condition: 57.8/84.0 Wh (68.9%) 
  volts: 12.8 min: 11.4 model: LGC-LGC3.67 DELL T453X65 type: Li-ion 
  serial: <filter> status: Full 
Memory:
  RAM: total: 15.42 GiB used: 6 GiB (38.9%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: Quad Core model: Intel Core i7-6700HQ bits: 64 type: MT MCP 
  arch: Skylake-S family: 6 model-id: 5E (94) stepping: 3 microcode: EA cache: 
  L2: 6 MiB bogomips: 41621 
  Speed: 3269 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 3269 2: 3490 
  3: 3274 4: 3242 5: 3272 6: 3470 7: 3102 8: 3145 
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art 
  avx avx2 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 fxsr hle ht hwp hwp_act_window 
  hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm lm 
  mca mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat 
  pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts 
  rdrand rdseed rdtscp rep_good rtm sdbg sep smap smep ss ssbd sse sse2 sse4_1 
  sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust 
  tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt 
  xsaves xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  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: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort mitigation: Clear CPU buffers; SMT vulnerable 
Graphics:
  Device-1: Intel HD Graphics 530 vendor: Dell XPS 15 9550 driver: i915 
  v: kernel bus-ID: 00:02.0 chip-ID: 8086:191b class-ID: 0300 
  Device-2: NVIDIA GM107M [GeForce GTX 960M] vendor: Dell XPS 15 9550 
  driver: nvidia v: 470.63.01 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
  chip-ID: 10de:139b class-ID: 0302 
  Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: 
  loaded: modesetting,nvidia alternate: fbdev,nouveau,nv,vesa display-ID: :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: eDP-1 res: 1920x1080 hz: 60 dpi: 141 size: 346x194mm (13.6x7.6") 
  diag: 397mm (15.6") 
  OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) v: 4.6 Mesa 21.2.3 
  direct render: Yes 
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio 
  vendor: Dell XPS 15 9550 driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 
  chip-ID: 8086:a170 class-ID: 0403 
  Sound Server-1: ALSA v: k5.13.19-2-MANJARO running: yes 
  Sound Server-2: JACK v: 1.9.19 running: no 
  Sound Server-3: PulseAudio v: 15.0 running: yes 
  Sound Server-4: PipeWire v: 0.3.38 running: yes 
Network:
  Device-1: Broadcom BCM43602 802.11ac Wireless LAN SoC vendor: Dell 
  driver: brcmfmac v: kernel port: e000 bus-ID: 02:00.0 chip-ID: 14e4:43ba 
  class-ID: 0280 
  IF: wlp2s0 state: up mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> scope: link 
  IF-ID-1: virbr0 state: down mac: <filter> 
  IP v4: <filter> scope: global broadcast: <filter> 
  WAN IP: <filter> 
Bluetooth:
  Device-1: Broadcom BCM20703A1 Bluetooth 4.1 + LE type: USB driver: btusb 
  v: 0.8 bus-ID: 1-4:3 chip-ID: 0a5c:6410 class-ID: fe01 serial: <filter> 
  Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends 
Logical:
  Message: No logical block device data found. 
RAID:
  Message: No RAID data found. 
Drives:
  Local Storage: total: 476.94 GiB used: 98.56 GiB (20.7%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Toshiba 
  model: THNSN5512GPU7 NVMe 512GB size: 476.94 GiB block-size: physical: 512 B 
  logical: 512 B speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> 
  rev: 57DA4103 temp: 35.9 C scheme: MBR 
  Message: No optical or floppy data found. 
Partition:
  ID-1: / raw-size: 476.93 GiB size: 468.38 GiB (98.21%) 
  used: 98.56 GiB (21.0%) fs: ext4 dev: /dev/nvme0n1p1 maj-min: 259:1 
  label: N/A uuid: 00b0a1cd-1f81-40a1-b607-4ff5d8dd5829 
Swap:
  Alert: No swap data was found. 
Unmounted:
  Message: No unmounted partitions found. 
USB:
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 1-1:2 info: Yubicom Yubikey NEO(-N) OTP+U2F+CCID 
  type: Keyboard,HID,Smart Card driver: hid-generic,usbhid interfaces: 3 
  rev: 2.0 speed: 12 Mb/s power: 30mA chip-ID: 1050:0116 class-ID: 0b00 
  Device-2: 1-4:3 info: Broadcom BCM20703A1 Bluetooth 4.1 + LE type: Bluetooth 
  driver: btusb interfaces: 4 rev: 2.0 speed: 12 Mb/s chip-ID: 0a5c:6410 
  class-ID: fe01 serial: <filter> 
  Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 8 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
Sensors:
  System Temperatures: cpu: 70.0 C mobo: 35.0 C sodimm: SODIMM C 
  Fan Speeds (RPM): cpu: 2514 
Info:
  Processes: 304 Uptime: 1d 1h 55m wakeups: 1 Init: systemd v: 249 
  tool: systemctl Compilers: gcc: 11.1.0 Packages: pacman: 1514 lib: 384 
  flatpak: 0 Shell: Zsh v: 5.8 default: Bash v: 5.1.8 running-in: konsole 
  inxi: 3.3.06
4
  • Kernel 5.13 is EOL so please install both 5.4 and 5.10 LTS (Long Term Support) and see which one of the two troubles you least.

:crossed_fingers: