I have a Thinkpad X1 Carbon Gen 12 with the following specs:
$ inxi -Fzxx
System:
Kernel: 6.14.9-300.fc42.x86_64 arch: x86_64 bits: 64 compiler: gcc v: 15.1.1
Desktop: GNOME v: 48.2 tk: GTK v: 3.24.49 wm: gnome-shell dm: GDM
Distro: Fedora Linux 42 (Workstation Edition)
Machine:
Type: Laptop System: LENOVO product: 21KCCTO1WW v: ThinkPad X1 Carbon Gen 12
serial: <superuser required> Chassis: type: 10 serial: <superuser required>
Mobo: LENOVO model: 21KCCTO1WW serial: <superuser required>
part-nu: LENOVO_MT_21KC_BU_Think_FM_ThinkPad X1 Carbon Gen 12 UEFI: LENOVO
v: N3YET74W (1.39 ) date: 12/18/2024
Battery:
ID-1: BAT0 charge: 21.0 Wh (38.8%) condition: 54.1/57.0 Wh (94.9%)
volts: 11.2 min: 11.7 model: BYD 5B11H56386 serial: <filter>
status: discharging
CPU:
Info: 16-core (6-mt/10-st) model: Intel Core Ultra 7 155H bits: 64
type: MST AMCP arch: Meteor Lake rev: 4 cache: L1: 1.6 MiB L2: 18 MiB
L3: 24 MiB
Speed (MHz): avg: 400 min/max: 400/4500:4800:3800:2500 cores: 1: 400
2: 400 3: 400 4: 400 5: 400 6: 400 7: 400 8: 400 9: 400 10: 400 11: 400
12: 400 13: 400 14: 400 15: 400 16: 400 17: 400 18: 400 19: 400 20: 400
21: 400 22: 400 bogomips: 131788
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Meteor Lake-P [Intel Arc Graphics] vendor: Lenovo
driver: i915 v: kernel arch: Xe-LPG ports: active: eDP-1 empty: DP-1, DP-2,
DP-3, DP-4, HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:7d55
Display: wayland server: X.org v: 1.21.1.16 with: Xwayland v: 24.1.6
compositor: gnome-shell driver: X: loaded: modesetting alternate: fbdev,vesa
dri: iris gpu: i915 display-ID: 0
Monitor-1: eDP-1 model: Samsung 0x419f res: 2880x1800 dpi: 242
diag: 356mm (14")
API: OpenGL v: 4.6 vendor: intel mesa v: 25.0.6 glx-v: 1.4 es-v: 3.2
direct-render: yes renderer: Mesa Intel Arc Graphics (MTL)
device-ID: 8086:7d55 display-ID: :0.0
API: EGL Message: EGL data requires eglinfo. Check --recommends.
Info: Tools: api: glxinfo x11: xdriinfo, xdpyinfo, xprop, xrandr
Audio:
Device-1: Intel Meteor Lake IPU vendor: Lenovo driver: N/A bus-ID: 00:05.0
chip-ID: 8086:7d19
Device-2: Intel Meteor Lake-P HD Audio vendor: Lenovo
driver: sof-audio-pci-intel-mtl bus-ID: 00:1f.3 chip-ID: 8086:7e28
API: ALSA v: k6.14.9-300.fc42.x86_64 status: kernel-api
Server-1: JACK v: 1.9.22 status: off
Server-2: PipeWire v: 1.4.4 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin
Network:
Device-1: Intel Wi-Fi 7 AX1775 /AX1790 /BE20 /BE401/BE1750 2x2
driver: iwlwifi v: kernel pcie: speed: 16 GT/s lanes: 1 bus-ID: 09:00.0
chip-ID: 8086:272b
IF: wlp9s0f0 state: up mac: <filter>
Bluetooth:
Device-1: Intel BE200 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
speed: 12 Mb/s lanes: 1 bus-ID: 3-10:4 chip-ID: 8087:0036
Report: btmgmt ID: hci0 rfk-id: 1 state: up address: <filter> bt-v: 5.4
lmp-v: 13
Drives:
Local Storage: total: 931.51 GiB used: 651.65 GiB (70.0%)
ID-1: /dev/nvme0n1 vendor: Western Digital model: WD BLACK SN850X 1000GB
size: 931.51 GiB speed: 63.2 Gb/s lanes: 4 serial: <filter> temp: 36.9 C
Partition:
ID-1: / size: 929.91 GiB used: 651.28 GiB (70.0%) fs: btrfs dev: /dev/dm-0
mapped: luks-5a7cd77f-8bf6-4f84-b372-70e01085de13
ID-2: /boot size: 973.4 MiB used: 360.1 MiB (37.0%) fs: ext4
dev: /dev/nvme0n1p2
ID-3: /boot/efi size: 598.8 MiB used: 19.3 MiB (3.2%) fs: vfat
dev: /dev/nvme0n1p1
ID-4: /home size: 929.91 GiB used: 651.28 GiB (70.0%) fs: btrfs
dev: /dev/dm-0 mapped: luks-5a7cd77f-8bf6-4f84-b372-70e01085de13
Swap:
ID-1: swap-1 type: zram size: 8 GiB used: 0 KiB (0.0%) priority: 100
dev: /dev/zram0
Sensors:
Src: /sys System Temperatures: cpu: 54.0 C mobo: N/A
Fan Speeds (rpm): cpu: 4654 fan-2: 4183
Info:
Memory: total: 32 GiB note: est. available: 30.78 GiB used: 7.25 GiB (23.6%)
Processes: 537 Power: uptime: 4d 6h 56m wakeups: 7 Init: systemd v: 257
target: graphical (5) default: graphical
Packages: pm: rpm pkgs: N/A note: see --rpm pm: flatpak pkgs: 22
Compilers: gcc: 15.1.1 Shell: Zsh v: 5.9 running-in: gnome-terminal
inxi: 3.3.38
My problem is that I cannot set the resolution on my external monitor (LG 34UM95-P) to 3440 x 1440 when I connect the laptop with the monitor via HDMI. The maximum that I get is 1980 x 1080.
Interestingly, when I connect the monitor via a USB-C dongle, it sporadically works with the 3440 x 1440 resolution (I need to plug/unplug multiple times for this to work). Most of the time, I only get a black screen though.
Here is what I have tried so far:
- Changed the HDMI cable (e.g., used HDMI 2.1 cable). Did not solve the issue.
- Checked with different laptops. On the Macbook Air M4 it works, on a Dell (Intel Arc; same GPU) with Ubuntu it does not work.
- Checked with a different OS on the same laptop. It works on my Lenovo when I install/use Windows 11.
- Installed the latest firmware and OS updates. No changes.
I am running out of options. I believe that this is a driver problem with the Intel Arc GPU, but I am not sure how I can solve this issue since my drivers are all up to date.
