1. System Information
- Laptop: ThinkPad E14 Gen 6 (AMD)
- Kernel: 6.12.20-2-MANJARO
- Desktop Environment: GNOME 48 (Wayland, also tested on Xorg)
- Graphics: AMD Radeon 680M (Rembrandt) –
amdgpudriver - Docking Station: Lenovo 100 USB-C Travel Dock (4X91H97874)
- Connection: USB-C → HDMI (via dock)
2. Issue Description
I am trying to use a Lenovo 100 USB-C Travel Dock to connect an external monitor via HDMI, but my system does not detect the display at all. Other dock functions (keyboard and mouse connected via USB-A) work correctly, but no video output is recognized.
inxi -zv8
System:
Kernel: 6.12.20-2-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
clocksource: hpet avail: acpi_pm
parameters: BOOT_IMAGE=/boot/vmlinuz-6.12-x86_64
root=UUID=c3bb4485-62f7-48af-b88b-0dce0541fcb9 rw quiet splash
udev.log_priority=3
Desktop: GNOME v: 48.0 tk: GTK v: 3.24.49 wm: gnome-shell
tools: gsd-screensaver-proxy dm: GDM v: 48.0 Distro: Manjaro
base: Arch Linux
Machine:
Type: Laptop System: LENOVO product: 21M4S1G900 v: ThinkPad E14 Gen 6
serial: <superuser required> Chassis: type: 10 serial: <superuser required>
Mobo: LENOVO model: 21M4S1G900 v: ThinkPad serial: <superuser required>
part-nu: LENOVO_MT_21M4_BU_Think_FM_ThinkPad E14 Gen 6
uuid: <superuser required> UEFI: LENOVO v: R2KET30W (1.13 )
date: 02/07/2025
Battery:
ID-1: BAT0 charge: 48.0 Wh (78.8%) condition: 60.9/57.0 Wh (106.8%)
volts: 12.1 min: 11.3 model: COSMX LNV-5B11M75269�� type: Li-poly
serial: <filter> status: not charging cycles: 4
Memory:
System RAM: total: 32 GiB available: 30.12 GiB used: 3.1 GiB (10.3%)
Message: For most reliable report, use superuser + dmidecode.
Array-1: capacity: 64 GiB slots: 2 modules: 2 EC: None
max-module-size: 32 GiB note: est.
Device-1: Channel-A DIMM 0 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 16 GiB speed: 4800 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64
manufacturer: Micron Technology part-no: MTC8C1084S1SC56BD1
serial: <filter>
Device-2: Channel-B DIMM 0 type: DDR5 detail: synchronous unbuffered
(unregistered) size: 16 GiB speed: 4800 MT/s volts: note: check curr: 1
min: 1 max: 1 width (bits): data: 64 total: 64
manufacturer: Ramaxel Technology part-no: RMSB3410HA88IBF-5600
serial: <filter>
PCI Slots:
Permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: model: AMD Ryzen 5 7535HS with Radeon Graphics bits: 64 type: MT MCP
arch: Zen 3+ gen: 3 level: v3 note: check built: 2022 process: TSMC n6 (7nm)
family: 0x19 (25) model-id: 0x44 (68) stepping: 1 microcode: 0xA404107
Topology: cpus: 1x dies: 1 clusters: 1 cores: 6 threads: 12 tpc: 2
smt: enabled cache: L1: 384 KiB desc: d-6x32 KiB; i-6x32 KiB L2: 3 MiB
desc: 6x512 KiB L3: 16 MiB desc: 1x16 MiB
Speed (MHz): avg: 1108 min/max: 400/4603 boost: enabled scaling:
driver: amd-pstate-epp governor: powersave cores: 1: 1108 2: 1108 3: 1108
4: 1108 5: 1108 6: 1108 7: 1108 8: 1108 9: 1108 10: 1108 11: 1108 12: 1108
bogomips: 79075
Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
constant_tsc cpb cppc cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total
cqm_occup_llc cr8_legacy cx16 cx8 de debug_swap decodeassists erms
extapic extd_apicid f16c flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt
ht hw_pstate ibpb ibrs ibs invpcid irperf lahf_lm lbrv lm mba mca mce
misalignsse mmx mmxext monitor movbe msr mtrr mwaitx nonstop_tsc nopl npt
nrip_save nx ospke osvw overflow_recov pae pat pausefilter pclmulqdq
pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pku pni
popcnt pse pse36 rapl rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep
sha_ni skinit smap smca smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3
stibp succor svm svm_lock syscall tce topoext tsc tsc_scale umip
user_shstk v_spec_ctrl v_vmsave_vmload vaes vgif vmcb_clean vme vmmcall
vpclmulqdq wbnoinvd wdt x2apic xgetbv1 xsave xsavec xsaveerptr xsaveopt
xsaves xtopology
Vulnerabilities:
Type: gather_data_sampling status: Not affected
Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: mmio_stale_data status: Not affected
Type: reg_file_data_sampling status: Not affected
Type: retbleed status: Not affected
Type: spec_rstack_overflow mitigation: Safe RET
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
prctl
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
sanitization
Type: spectre_v2 mitigation: Retpolines; IBPB: conditional; IBRS_FW;
STIBP: always-on; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
affected
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Rembrandt [Radeon 680M]
vendor: Lenovo driver: amdgpu v: kernel arch: RDNA-2 code: Navi-2x
process: TSMC n7 (7nm) built: 2020-22 pcie: gen: 4 speed: 16 GT/s
lanes: 16 ports: active: eDP-1 empty: DP-1, DP-2, DP-3, DP-4, DP-5, DP-6,
HDMI-A-1, Writeback-1 bus-ID: 04:00.0 chip-ID: 1002:1681 class-ID: 0300
temp: 39.0 C
Device-2: Bison Integrated Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 5-1:2 chip-ID: 5986:1198
class-ID: fe01 serial: <filter>
Display: x11 server: X.org v: 1.21.1.16 with: Xwayland v: 24.1.6
compositor: gnome-shell driver: X: loaded: amdgpu
unloaded: modesetting,radeon alternate: fbdev,vesa dri: radeonsi
gpu: amdgpu display-ID: :0 note: <missing: xdpyinfo/xrandr>
Monitor-1: eDP-1 model: BOE Display 0x0a35 built: 2021 res: 1920x1200
dpi: 161 gamma: 1.2 chroma: red: x: 0.596 y: 0.369 green: x: 0.349 y: 0.576
blue: x: 0.157 y: 0.125 white: x: 0.314 y: 0.329
size: 302x189mm (11.89x7.44") diag: 356mm (14") ratio: 16:10
modes: 1920x1200, 1920x1080, 1600x1200, 1680x1050, 1280x1024, 1440x900,
1280x800, 1280x720, 1024x768, 800x600, 640x480
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi x11:
drv: radeonsi inactive: wayland
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.0.2-arch1.2
glx-v: 1.4 direct-render: yes renderer: AMD Radeon 660M (radeonsi rembrandt
LLVM 19.1.7 DRM 3.61 6.12.20-2-MANJARO) device-ID: 1002:1681
memory: 1000 MiB unified: no
Info: Tools: api: eglinfo,glxinfo x11: xprop
Audio:
Device-1: Advanced Micro Devices [AMD/ATI] Rembrandt Radeon High Definition
Audio vendor: Lenovo driver: snd_hda_intel v: kernel pcie: gen: 4
speed: 16 GT/s lanes: 16 bus-ID: 04:00.1 chip-ID: 1002:1640 class-ID: 0403
Device-2: Advanced Micro Devices [AMD] ACP/ACP3X/ACP6x Audio Coprocessor
vendor: Lenovo driver: snd_pci_acp6x v: kernel alternate: snd_pci_acp3x,
snd_rn_pci_acp3x, snd_pci_acp5x, snd_acp_pci, snd_rpl_pci_acp6x,
snd_pci_ps, snd_sof_amd_renoir, snd_sof_amd_rembrandt,
snd_sof_amd_vangogh, snd_sof_amd_acp63, snd_sof_amd_acp70 pcie: gen: 4
speed: 16 GT/s lanes: 16 bus-ID: 04:00.5 chip-ID: 1022:15e2 class-ID: 0480
Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio
vendor: Lenovo driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s
lanes: 16 bus-ID: 04:00.6 chip-ID: 1022:15e3 class-ID: 0403
API: ALSA v: k6.12.20-2-MANJARO status: kernel-api tools: N/A
Server-1: JACK v: 1.9.22 status: off tools: N/A
Server-2: PipeWire v: 1.4.1 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active
tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
vendor: Lenovo driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
port: 3000 bus-ID: 01:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp1s0 state: down mac: <filter>
Device-2: Realtek RTL8852BE PCIe 802.11ax Wireless Network vendor: Lenovo
driver: rtw89_8852be v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
port: 2000 bus-ID: 02:00.0 chip-ID: 10ec:b852 class-ID: 0280
IF: wlp2s0 state: up mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
WAN IP: <filter>
Bluetooth:
Device-1: Realtek Bluetooth Radio driver: btusb v: 0.8 type: USB rev: 1.0
speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-4:2 chip-ID: 0bda:4853
class-ID: e001 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: 77.57 GiB (16.3%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
model: MZAL8512HDLU-00BLL size: 476.94 GiB block-size: physical: 512 B
logical: 512 B speed: 63.2 Gb/s lanes: 4 tech: SSD serial: <filter>
fw-rev: 7L2QKXD7 temp: 28.9 C scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 476.64 GiB size: 468.09 GiB (98.21%)
used: 77.56 GiB (16.6%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
label: N/A uuid: c3bb4485-62f7-48af-b88b-0dce0541fcb9
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 288 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A
uuid: B834-A8A3
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: no
ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2
file: /swapfile
Unmounted:
Message: No unmounted partitions found.
USB:
Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Device-1: 1-4:2 info: Realtek Bluetooth Radio type: bluetooth
driver: btusb interfaces: 2 rev: 1.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
mode: 1.1 power: 500mA chip-ID: 0bda:4853 class-ID: e001 serial: <filter>
Hub-2: 2-0:1 info: super-speed hub ports: 2 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 3 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Device-1: 3-3:2 info: Elan Micro ELAN:ARM-M4 type: <vendor specific>
driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
mode: 1.1 power: 100mA chip-ID: 04f3:0c8c class-ID: 0000
Hub-4: 4-0:1 info: super-speed hub ports: 2 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-5: 5-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Device-1: 5-1:2 info: Bison Integrated Camera type: video driver: uvcvideo
interfaces: 3 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0
power: 500mA chip-ID: 5986:1198 class-ID: fe01 serial: <filter>
Hub-6: 6-0:1 info: Linux Foundation 3.0 root hub ports: N/A rev: 3.0
speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-7: 7-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-8: 8-0:1 info: super-speed hub ports: 1 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-9: 9-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-10: 9-1:2 info: VIA Labs USB2.0 Hub ports: 5 rev: 2.1
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 2109:2817
class-ID: 0900
Device-1: 9-1.1:3 info: Lenovo USB-A Unified Pairing Receiver
type: keyboard,mouse driver: hid-generic,usbhid interfaces: 4 rev: 2.0
speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
chip-ID: 17ef:6116 class-ID: 0301
Device-2: 9-1.3:4 info: Lenovo Billboard Device type: keyboard,billboard
driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
lanes: 1 mode: 1.1 chip-ID: 17ef:10c0 class-ID: 1100 serial: <filter>
Device-3: 9-1.4:5 info: Apple Aluminium Keyboard (ANSI)
type: keyboard,mouse driver: apple,usbhid interfaces: 2 rev: 2.0
speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
chip-ID: 05ac:024f class-ID: 0301
Device-4: 9-1.5:6 info: VIA Labs USB Billboard Device type: billboard
driver: N/A interfaces: 1 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1
mode: 2.0 chip-ID: 2109:8817 class-ID: 1100 serial: <filter>
Hub-11: 10-0:1 info: super-speed hub ports: 1 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-12: 10-1:2 info: VIA Labs USB3.0 Hub ports: 4 rev: 3.2
speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 2109:0817
class-ID: 0900
Sensors:
System Temperatures: cpu: 41.0 C mobo: 33.5 C gpu: amdgpu temp: 40.0 C
Fan Speeds (rpm): fan-1: 0 fan-2: 0
Repos:
Packages: pm: pacman pkgs: 1114 libs: 339 tools: gnome-software,pamac
Active pacman repo servers in: /etc/pacman.d/mirrorlist
...
CPU top: 5 of 345
1: cpu: 11.4% command: localsearch-extractor-3 pid: 11790
mem: 38.1 MiB (0.1%)
2: cpu: 6.6% command: firefox pid: 6097 mem: 704.5 MiB (2.2%)
3: cpu: 3.1% command: gnome-shell pid: 5405 mem: 406.5 MiB (1.3%)
4: cpu: 1.9% command: firefox pid: 6339 mem: 324.4 MiB (1.0%)
5: cpu: 1.6% command: Xorg pid: 5293 mem: 215.6 MiB (0.6%)
Memory top: 5 of 345
1: mem: 704.5 MiB (2.2%) command: firefox pid: 6097 cpu: 6.6%
2: mem: 406.5 MiB (1.3%) command: gnome-shell pid: 5405 cpu: 3.1%
3: mem: 324.4 MiB (1.0%) command: firefox pid: 6339 cpu: 1.9%
4: mem: 316.6 MiB (1.0%) command: firefox pid: 6279 cpu: 0.9%
5: mem: 300.4 MiB (0.9%) command: firefox pid: 10722 cpu: 0.1%
Info:
Processes: 345 Power: uptime: 1h 24m states: freeze,mem,disk suspend: s2idle
wakeups: 0 hibernate: platform avail: shutdown, reboot, suspend, test_resume
image: 12.03 GiB services: gsd-power, power-profiles-daemon, upowerd
Init: systemd v: 257 default: graphical tool: systemctl
Compilers: clang: 19.1.7 gcc: 14.2.1 Shell: Zsh v: 5.9
running-in: gnome-terminal inxi: 3.3.37