Cannot enter space character while holding the Shift key after the latest stable update

Photon · 13 December 2025 19:03

Hi guys,

after the latest stable update I noticed that I cannot enter the space character while the Shift key is pressed. This leads to space characters being often munched while typing fast.

The issue only appears in GTK apps, QT apps behave smoothly. It appears with several DEs and WMs. xev and showkeys catch the key press events even if the Shift key is pressed. Even an online keyboard tester registers the key being pressed while I cannot type the space character in a text field in Firefox.

I suspect something related to GTK3 being the culprit, but downgrading gtk3 didn’t help.

Please let me know if you need further infos or logs!

Best,
Photon

soundofthunder · 14 December 2025 05:32

Type slower.

I don’t think not being able to use space and shift at the same time to type a blank character is necessarily an issue – after all space doesn’t have an uppercase counterpart, as with most other keys.

However, I will mention that I’ve noticed some input latency from time to time when using the terminal (in Gnome/XFCE) and in some GTK based applications (and that’s without considering shift) – as you suggest, with Qt based apps there never seems to be a problem.

I note that if I type more slowly, there is no longer an issue – so, I wasn’t being necessarily facetious by opening with “Type slower”.

What causes this, I can’t say, as it seems so sporadic; but downgrading key system components certainly isn’t the way to address such problems, going forward.

Hopefully, someone might have a thought or two.

In the meantime, please provide your system information as described (below) to allow others an opportunity to identify possible contributors.

Regards.

System Information

While information from *-fetch type apps might be fine for someone wishing to buy your computer, for Support purposes it’s better to ask your system directly;

Output of the inxi command (with appropriate parameters, and formatted according to forum guidelines) will generate information useful for those wishing to help:

Suggested inxi command (use either):


`inxi -zv8`	(short-form)
`inxi --filter --verbosity=8`	(long-form)
inxi man pages	(manual)

If running `inxi` within a `chroot` environment

Add --color=0 to the long-form command, or…
Change the short-form command to inxi -zv8c0

Your privacy is respected

Photon · 14 December 2025 08:54

Come on, really?

In my case it is actually 100% reproducible.

Of course, I only downgraded temporarily to find the culprit, it’s not intended as a permanent solution.

Here is the inxi output:

[photon@ThinkpadL13Yoga ~]$ inxi -zv8
System:
  Kernel: 6.17.11-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 15.2.1
    clocksource: tsc avail: acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.17-x86_64
    root=UUID=34ff87f0-4b17-48ee-a5d4-cd4d3a5f7c10 rw i8042.reset i8042.nomux
    i8042.nopnp i8042.noloop psmouse.synaptics_intertouch=0 quiet apparmor=1
    security=apparmor resume=UUID=a523f484-b04f-43b1-8bca-b64d1da97d39
    udev.log_priority=3 ibt=off
  Desktop: Xfce v: 4.20.1 tk: Gtk v: 3.24.51 wm: Compiz v: 0.9.14.2
    with: cairo-dock,xfce4-panel tools: light-locker dm: LightDM v: 1.32.0
    Distro: Manjaro base: Arch Linux
Machine:
  Type: Convertible System: LENOVO product: 20VLS01500
    v: ThinkPad L13 Yoga Gen 2 serial: <superuser required> Chassis: type: 31
    serial: <superuser required>
  Mobo: LENOVO model: 20VLS01500 serial: <superuser required>
    part-nu: LENOVO_MT_20VL_BU_Think_FM_ThinkPad L13 Yoga Gen 2
    uuid: <superuser required> Firmware: UEFI vendor: LENOVO
    v: R1FET46W (1.20 ) date: 08/05/2022
Battery:
  ID-1: BAT0 charge: 14.7 Wh (40.1%) condition: 36.7/46 Wh (79.8%)
    power: 12.1 W volts: 14.6 min: 15.36 model: Sunwoda 5B10W13935 type: Li-poly
    serial: <filter> charging: status: discharging control: start: 75%
    end: 80% cycles: 2651
Memory:
  System RAM: total: 16 GiB available: 15.29 GiB used: 5.16 GiB (33.7%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 32 GiB slots: 2 modules: 2 EC: None
    max-module-size: 16 GiB note: est.
  Device-1: Controller0-ChannelA type: DDR4 detail: synchronous size: 8 GiB
    speed: 3200 MT/s volts: curr: 1 width (bits): data: 64 total: 64
    manufacturer: Samsung part-no: M471A1G44AB0-CWE serial: N/A
  Device-2: Controller1-ChannelA type: DDR4 detail: synchronous size: 8 GiB
    speed: 3200 MT/s volts: curr: 1 width (bits): data: 64 total: 64
    manufacturer: Samsung part-no: M471A1G44AB0-CWE serial: N/A
PCI Slots:
  Permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: 11th Gen Intel Core i5-1135G7 bits: 64 type: MT MCP
    arch: Tiger Lake gen: core 11 level: v4 note: check built: 2020
    process: Intel 10nm family: 6 model-id: 0x8C (140) stepping: 1
    microcode: 0xBC
  Topology: cpus: 1x dies: 1 clusters: 4 cores: 4 threads: 8 tpc: 2
    smt: enabled cache: L1: 320 KiB desc: d-4x48 KiB; i-4x32 KiB L2: 5 MiB
    desc: 4x1.2 MiB L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 400 min/max: 400/4200 scaling: driver: intel_pstate
    governor: powersave cores: 1: 400 2: 400 3: 400 4: 400 5: 400 6: 400 7: 400
    8: 400 bogomips: 38707
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 avx512_bitalg avx512_vbmi2
    avx512_vnni avx512_vp2intersect avx512_vpopcntdq avx512bw avx512cd
    avx512dq avx512f avx512ifma avx512vbmi avx512vl bmi1 bmi2 bts cat_l2
    cdp_l2 clflush clflushopt clwb 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
    lahf_lm lm mca mce md_clear mmx monitor movbe movdir64b movdiri 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 rdt_a rdtscp
    rep_good sdbg sep 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 user_shstk vaes vme vmx vnmi
    vpclmulqdq vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology
    xtpr
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: ghostwrite status: Not affected
  Type: indirect_target_selection mitigation: Aligned branch/return thunks
  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: old_microcode status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow 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: Enhanced / Automatic IBRS; IBPB:
    conditional; PBRSB-eIBRS: SW sequence; BHI: SW loop, KVM: SW loop
  Type: srbds status: Not affected
  Type: tsa status: Not affected
  Type: tsx_async_abort status: Not affected
  Type: vmscape status: Not affected
Graphics:
  Device-1: Intel TigerLake-LP GT2 [Iris Xe Graphics] vendor: Lenovo
    driver: i915 v: kernel alternate: xe arch: Xe process: Intel 10nm
    built: 2020-21 ports: active: eDP-1 empty: DP-1, DP-2, DP-3, DP-4,
    HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:9a49 class-ID: 0300
  Device-2: Chicony ThinkPad T490 Webcam driver: uvcvideo type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-5:2 chip-ID: 04f2:b681
    class-ID: 0e02 serial: <filter>
  Device-3: Bison Integrated 5M Camera driver: uvcvideo type: USB rev: 2.1
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-9:6 chip-ID: 5986:1165
    class-ID: 0e02 serial: <filter>
  Display: x11 server: X.Org v: 21.1.21 compositor: Compiz v: 0.9.14.2
    driver: X: loaded: modesetting alternate: fbdev,vesa dri: iris gpu: i915
    display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 2560x1440 s-dpi: 96 s-size: 678x382mm (26.69x15.04")
    s-diag: 778mm (30.64")
  Monitor-1: eDP-1 model: LG Display 0x05ea built: 2018 res: mode: 1920x1080
    hz: 60 scale: 75% (1.33333333333333) to: 2560x1440 dpi: 166 gamma: 1.2
    chroma: red: x: 0.647 y: 0.325 green: x: 0.306 y: 0.608 blue: x: 0.153
    y: 0.047 white: x: 0.314 y: 0.329 size: 294x165mm (11.57x6.5")
    diag: 337mm (13.3") ratio: 16:9 modes: 1920x1080
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris x11: drv: iris
    inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 25.3.1-arch1.2
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel Iris Xe Graphics (TGL
    GT2) device-ID: 8086:9a49 memory: 14.93 GiB unified: yes
  Info: Tools: api: eglinfo,glxinfo de: xfce4-display-settings
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Intel Tiger Lake-LP Smart Sound Audio vendor: Lenovo
    driver: snd_hda_intel v: kernel alternate: snd_soc_avs,snd_sof_pci_intel_tgl
    bus-ID: 00:1f.3 chip-ID: 8086:a0c8 class-ID: 0403
  API: ALSA v: k6.17.11-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.4.9 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Wi-Fi 6 AX201 driver: iwlwifi v: kernel bus-ID: 00:14.3
    chip-ID: 8086:a0f0 class-ID: 0280
  IF: wlp0s20f3 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: noprefixroute scope: link
  Device-2: Intel Ethernet I219-V vendor: Lenovo driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15fc class-ID: 0200
  IF: enp0s31f6 state: down mac: <filter>
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel AX201 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 3-10:7 chip-ID: 8087:0026
    class-ID: e001
  Report: btmgmt ID: hci0 rfk-id: 1 state: up address: <filter> bt-v: 5.2
    lmp-v: 11 status: discoverable: no pairing: no class-ID: 7c0000
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 476.94 GiB used: 299.71 GiB (62.8%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: MZVLB512HBJQ-000L7 size: 476.94 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: 5M2QEXF7 temp: 35.9 C scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 390.67 GiB size: 383.47 GiB (98.16%)
    used: 299.69 GiB (78.2%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
    label: N/A uuid: 34ff87f0-4b17-48ee-a5d4-cd4d3a5f7c10
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 25.6 MiB (8.6%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
    label: NO_LABEL uuid: C614-082A
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 8.8 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/nvme0n1p3 maj-min: 259:3 label: N/A
    uuid: a523f484-b04f-43b1-8bca-b64d1da97d39
Unmounted:
  ID-1: /dev/nvme0n1p4 maj-min: 259:4 size: 77.17 GiB fs: ext4 label: N/A
    uuid: 45b67766-eacf-4bb7-bad5-d7432ea61320
USB:
  Hub-1: 1-0:1 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-2: 2-0:1 info: super-speed hub ports: 4 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: 12 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: 3-5:2 info: Chicony ThinkPad T490 Webcam type: video
    driver: uvcvideo interfaces: 4 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 power: 500mA chip-ID: 04f2:b681 class-ID: 0e02
    serial: <filter>
  Device-2: 3-6:3 info: Synaptics Prometheus MIS Touch Fingerprint Reader
    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: 06cb:00bd class-ID: ff00 serial: <filter>
  Device-3: 3-7:4 info: Alcor Micro AU9540 Smartcard Reader type: smart card
    driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
    mode: 1.1 power: 50mA chip-ID: 058f:9540 class-ID: 0b00
  Device-4: 3-8:5 info: Wacom Pen and multitouch sensor type: HID
    driver: usbhid,wacom interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
    lanes: 1 mode: 1.1 power: 400mA chip-ID: 056a:51f9 class-ID: 0300
  Device-5: 3-9:6 info: Bison Integrated 5M Camera type: video
    driver: uvcvideo interfaces: 2 rev: 2.1 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 power: 500mA chip-ID: 5986:1165 class-ID: 0e02
    serial: <filter>
  Device-6: 3-10:7 info: Intel AX201 Bluetooth type: bluetooth driver: btusb
    interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1
    power: 100mA chip-ID: 8087:0026 class-ID: e001
  Hub-4: 4-0:1 info: super-speed hub ports: 4 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
Sensors:
  System Temperatures: cpu: 55.0 C mobo: 36.0 C
  Fan Speeds (rpm): cpu: 3366
Repos:
  Packages: pm: pacman pkgs: 2375 libs: 384 tools: pamac,yay pm: flatpak
    pkgs: 0
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://ftp.halifax.rwth-aachen.de/manjaro/stable/$repo/$arch
    2: https://mirror.alpix.eu/manjaro/stable/$repo/$arch
    3: https://manjaro.kurdy.org/stable/$repo/$arch
    4: https://ftp.gwdg.de/pub/linux/manjaro/stable/$repo/$arch
    5: https://mirror.23m.com/manjaro/stable/$repo/$arch
    6: http://ftp.uni-kl.de/pub/linux/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 303
  1: cpu: 100% command: ps pid: 70200 mem: 4.16 MiB (0.0%)
  2: cpu: 23.2% command: xfce4-terminal pid: 70083 mem: 96.3 MiB (0.6%)
  3: cpu: 3.4% command: firefox pid: 5692 mem: 1151.4 MiB (7.3%)
  4: cpu: 3.2% command: glycin-svg pid: 69475 mem: 35.8 MiB (0.2%)
  5: cpu: 2.6% command: syncthing pid: 3412 mem: 60.0 MiB (0.3%)
  Memory top: 5 of 303
  1: mem: 1151.4 MiB (7.3%) command: firefox pid: 5692 cpu: 3.4%
  2: mem: 482.9 MiB (3.0%) command: firefox pid: 8498 cpu: 0.2%
  3: mem: 411.7 MiB (2.6%) command: firefox pid: 7987 cpu: 0.1%
  4: mem: 383.9 MiB (2.4%) command: firefox pid: 8081 cpu: 0.1%
  5: mem: 356.0 MiB (2.2%) command: firefox pid: 66781 cpu: 2.2%
Info:
  Processes: 303 Power: uptime: 10h 15m states: freeze,mem,disk
    suspend: s2idle wakeups: 1 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 6.1 GiB services: upowerd,xfce4-power-manager
    Init: systemd v: 258 default: graphical tool: systemctl
  Compilers: clang: 21.1.6 gcc: 15.2.1 Shell: Bash v: 5.3.8
    running-in: xfce4-terminal inxi: 3.3.40

Photon · 16 December 2025 22:11

Maybe I can provide some further information to help diagnose the issue? Like the update log or something?

Aragorn · 16 December 2025 22:55

This suggests that you may have some keyboard shortcut assigned to the ShiftSpace combination, and perhaps this shortcut is only intercepted as such by gtk-based applications.

One possible explanation — related to the above — could be that the ShiftSpace combination has been assigned to insert a so-called non-breakable space character, intended to work around the automatic line wrap in certain editors.

Photon · 17 December 2025 08:22

How would I find such a setting? The issue appeared after an update, so I definitely didn’t assign such a shortcut myself (it appears in a freshly created user, so it’s not a user setting for sure)…

Aragorn · 17 December 2025 23:35

It might be a new default setting — I don’t use Xfce, but that sort of thing does occasionally pop up in other desktop environments as well.