Latest update broke Displays

Support KDE Plasma
1

After updating the system to the latest version of Manjaro, my external monitor got disconfigured. When I try to reconfigure it, going to System Settings > Display and Monitor > Displays, I get the following error message:

20220627-1401+screenshot
20220627-1401+screenshot831×388 12.3 KB

I tried to reinstall kdisplay and disman, but the problem persists.
Any idea on how to solve this issue?

Output of `inxi -Fazy` 
System:
Kernel: 5.18.6-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.1.0
parameters: BOOT_IMAGE=/vmlinuz-5.18-x86_64
root=UUID=ca0b13f1-3220-4bc9-9dc7-77d2311111e0 rw rootflags=subvol=@ quiet
apparmor=1 security=apparmor udev.log_priority=3
Desktop: KDE Plasma v: 5.24.5 tk: Qt v: 5.15.5 info: latte-dock
wm: kwin_x11 vt: 1 dm: SDDM Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Laptop System: LENOVO product: 4180Q3U v: ThinkPad T420
serial: <superuser required> Chassis: type: 10 serial: <superuser required>
Mobo: LENOVO model: 4180Q3U serial: <superuser required>
UEFI-[Legacy]: LENOVO v: 83ET82WW (1.52 ) date: 06/04/2018
Battery:
ID-1: BAT0 charge: 42.5 Wh (57.5%) condition: 73.9/75.5 Wh (97.9%)
volts: 11.1 min: 11.1 model: SANYO 45N1023 type: Li-ion serial: <filter>
status: not charging
CPU:
Info: model: Intel Core i7-2640M bits: 64 type: MT MCP arch: Sandy Bridge
gen: core 2 built: 2010-12 process: Intel 32nm family: 6 model-id: 0x2A (42)
stepping: 7 microcode: 0x2F
Topology: cpus: 1x cores: 2 tpc: 2 threads: 4 smt: enabled cache:
L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB desc: 2x256 KiB
L3: 4 MiB desc: 1x4 MiB
Speed (MHz): avg: 1683 high: 3089 min/max: 800/3500 scaling:
driver: intel_cpufreq governor: schedutil cores: 1: 3089 2: 1060 3: 797
4: 1786 bogomips: 22332
Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3
Vulnerabilities:
Type: itlb_multihit status: KVM: VMX unsupported
Type: l1tf mitigation: PTE Inversion
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: mmio_stale_data status: Not affected
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: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics
vendor: Lenovo ThinkPad T420 driver: i915 v: kernel arch: Gen6
process: Intel 32nm built: 2011 ports: active: DP-3,LVDS-1
empty: DP-1, DP-2, HDMI-A-1, HDMI-A-2, HDMI-A-3, VGA-1 bus-ID: 00:02.0
chip-ID: 8086:0126 class-ID: 0300
Device-2: Chicony integrated camera type: USB driver: uvcvideo
bus-ID: 1-1.6:6 chip-ID: 04f2:b221 class-ID: 0e02
Display: x11 server: X.Org v: 21.1.3 compositor: kwin_x11 driver: X:
loaded: modesetting alternate: fbdev,vesa gpu: i915 display-ID: :0
screens: 1
Screen-1: 0 s-res: 3520x1200 s-dpi: 96 s-size: 931x317mm (36.65x12.48")
s-diag: 983mm (38.72")
Monitor-1: DP-3 pos: right model: PA248QV serial: <filter> built: 2020
res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2 size: 518x324mm (20.39x12.76")
diag: 611mm (24.1") ratio: 16:10 modes: max: 1920x1200 min: 720x400
Monitor-2: LVDS-1 pos: primary,left model: LG Display 0x02e2 built: 2010
res: 1600x900 hz: 60 dpi: 131 gamma: 1.2 size: 310x174mm (12.2x6.85")
diag: 355mm (14") ratio: 16:9 modes: 1600x900
OpenGL: renderer: Mesa Intel HD Graphics 3000 (SNB GT2) v: 3.3 Mesa 22.1.2
direct render: Yes
Audio:
Device-1: Intel 6 Series/C200 Series Family High Definition Audio
vendor: Lenovo driver: snd_hda_intel v: kernel bus-ID: 00:1b.0
chip-ID: 8086:1c20 class-ID: 0403
Sound Server-1: ALSA v: k5.18.6-1-MANJARO running: yes
Sound Server-2: sndio v: N/A running: no
Sound Server-3: JACK v: 1.9.21 running: no
Sound Server-4: PulseAudio v: 16.1 running: yes
Sound Server-5: PipeWire v: 0.3.52 running: yes
Network:
Device-1: Intel 82579LM Gigabit Network vendor: Lenovo ThinkPad T520
driver: e1000e v: kernel port: 5080 bus-ID: 00:19.0 chip-ID: 8086:1502
class-ID: 0200
IF: enp0s25 state: up speed: 1000 Mbps duplex: full mac: <filter>
Device-2: Intel Centrino Advanced-N 6205 [Taylor Peak] driver: iwlwifi
v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 03:00.0
chip-ID: 8086:0085 class-ID: 0280
IF: wlan0 state: up mac: <filter>
IF-ID-1: wwp0s29u1u4i6 state: down mac: <filter>
Bluetooth:
Device-1: Broadcom BCM2045B (BDC-2.1) type: USB driver: btusb v: 0.8
bus-ID: 1-1.4:4 chip-ID: 0a5c:217f class-ID: fe01 serial: <filter>
Report: rfkill ID: hci0 rfk-id: 3 state: up address: see --recommends
Drives:
Local Storage: total: 2.05 TiB used: 1.51 TiB (73.6%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 860 EVO 500GB
size: 465.76 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
type: SSD serial: <filter> rev: 3B6Q scheme: MBR
ID-2: /dev/sdb maj-min: 8:16 vendor: HGST (Hitachi) model: HTS541010A9E680
size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
type: HDD rpm: 5400 serial: <filter> rev: A7G0 scheme: MBR
ID-3: /dev/sdc maj-min: 8:32 type: USB vendor: Western Digital
model: WD7500KMVV-11A27S0 size: 697.98 GiB block-size: physical: 512 B
logical: 512 B type: HDD rpm: 5200 serial: <filter> rev: 1032 scheme: MBR
Partition:
ID-1: / raw-size: 100 GiB size: 100 GiB (100.00%) used: 28.69 GiB (28.7%)
fs: btrfs dev: /dev/sda2 maj-min: 8:2
ID-2: /boot raw-size: 512 MiB size: 511 MiB (99.80%)
used: 177.9 MiB (34.8%) fs: vfat dev: /dev/sda1 maj-min: 8:1
ID-3: /home raw-size: 365.26 GiB size: 365.26 GiB (100.00%)
used: 308.38 GiB (84.4%) fs: btrfs dev: /dev/sda3 maj-min: 8:3
ID-4: /var/log raw-size: 100 GiB size: 100 GiB (100.00%)
used: 28.69 GiB (28.7%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 58.0 C mobo: N/A
Fan Speeds (RPM): cpu: 3187 mobo: 65535 fan-2:
Info:
Processes: 286 Uptime: 59m wakeups: 1 Memory: 15.41 GiB
used: 4.22 GiB (27.4%) Init: systemd v: 251 default: graphical
tool: systemctl Compilers: gcc: 12.1.0 clang: 13.0.1 Packages: pacman: 2070
lib: 433 flatpak: 0 Shell: Zsh v: 5.9 running-in: konsole inxi: 3.3.19
2

did you try to uninstall those 2 modules, then reboot and see if that helped

3

Thank you @brahma for your reply.
I wanted to ask first, cause I didn’t know if it were safe to uninstalling them. But I’ll try it now.

4

since they are not installed by default, it should be safe…

5

@brahma I uninstalled those two modules, but now I simply don’t have access to the Displays configuration in System Settings. Which module should I install in order to have access to that?

6

:thinking:
were there any dependencies uninstalled with those 2 packages?

7

disman. The other one, kdisplay, is for use with the kwinft window manager, which is a fork of the official kwin and is non-standard.

8

I realised that kscreen has been uninstalled with the other two. I reinstalled it and everything is fine now.

I just reinstalled kscreen; disman is currently not installed but, apparently, everything is fine. Shall I leave it like this or would it be recommended to install disman as well?

9

disman is not installed by default, so there is no need to have it, since everyhting is working as it should

10

Refs "libDisman.so.0 missing" on Manjaro Plasma display settings (#47) · Issues · KWinFT / Disman · GitLab

I switched kdisplay against kdisplay-kwinft package and that solved the problem for me :slight_smile: