https://bugs.kde.org/show_bug.cgi?id=522273
Bug ID: 522273
Summary: failed to write-firmware: failed to write data to
efivarsfs: Error writing to file descriptor: No space
left on device
Classification: I don't know
Product: kde
Version First unspecified
Reported In:
Platform: KDE Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
DESCRIPTION
On KDE Linux 202606270310, updating "Microsoft UEFI dbx" from 20250902 to
20260402 (via pressing the "Update all" button in Discover), a dialog popped up
saying "There was an issue during the update or installation process. Please
try again later.". When clicking on "Show Technical Details", it said: "failed
to write-firmware: failed to write data to efivarsfs: Error writing to file
descriptor: No space left on device".
STEPS TO REPRODUCE
1. Be on KDE Linux 202606270310
2. Go in Discover, see that "Microsoft UEFI dbx" has a new version (20250902 ->
20260402)
3. Click "Update All" in the top right
4. See that the error popped up
OBSERVED RESULT
"Microsoft UEFI dbx" couldn't update due to the "No space left on device error"
EXPECTED RESULT
"Microsoft UEFI dbx" would successfully update from 20250902 to 20260402
SOFTWARE/OS VERSIONS
Operating System: KDE Linux 2026-06-27
KDE Plasma Version: 6.7.80
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.0.13-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × 12th Gen Intel® Core™ i5-12400F
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 3060
ADDITIONAL INFORMATION
Output of `duf`:
```
╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ 5 local devices
│
├──────────────────────────────────────┬────────┬────────┬────────┬─────────────────┬───────┬──────────────────────────────────────────────┤
│ MOUNTED ON │ SIZE │ USED │ AVAIL │ USE%
│ TYPE │ FILESYSTEM │
├──────────────────────────────────────┼────────┼────────┼────────┼─────────────────┼───────┼──────────────────────────────────────────────┤
│ / │ 927.5G │ 37.8G │ 888.4G │
4.1% │ btrfs │ /dev/nvme1n1p2 │
│ /boot │ 4.0G │ 935.3M │ 3.1G │ █▌
22.9% │ vfat │ /dev/nvme1n1p1 │
│ /system │ 927.5G │ 37.8G │ 888.4G │
4.1% │ btrfs │ /dev/nvme1n1p2 │
│ /usr │ 6.7G │ 6.7G │ 0B │ ████████
100.0% │ erofs │ /sysroot/system/kde-linux_202606270310.erofs │
│ /var/lib/incus/storage-pools/default │ 927.5G │ 37.8G │ 888.4G │
4.1% │ btrfs │ /dev/nvme1n1p2 │
╰──────────────────────────────────────┴────────┴────────┴────────┴─────────────────┴───────┴──────────────────────────────────────────────╯
╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ 12 special devices
│
├───────────────────────────────────────────┬────────┬────────┬────────┬────────────────────────────┬──────────┬────────────┤
│ MOUNTED ON │ SIZE │ USED │ AVAIL │
USE% │ TYPE │ FILESYSTEM │
├───────────────────────────────────────────┼────────┼────────┼────────┼────────────────────────────┼──────────┼────────────┤
│ /dev │ 15.4G │ 0B │ 15.4G │
0.0% │ devtmpfs │ devtmpfs │
│ /dev/shm │ 15.6G │ 168.0K │ 15.6G │
0.0% │ tmpfs │ tmpfs │
│ /run │ 6.2G │ 2.2M │ 6.2G │
0.0% │ tmpfs │ tmpfs │
│ /run/credentials/@encrypted │ 6.2G │ 2.2M │ 6.2G │
0.0% │ tmpfs │ tmpfs │
│ /run/credentials/systemd-journald.service │ 1.0M │ 0B │ 1.0M │
0.0% │ tmpfs │ none │
│ /run/credentials/systemd-resolved.service │ 1.0M │ 0B │ 1.0M │
0.0% │ tmpfs │ none │
│ /run/user/1000 │ 3.1G │ 188.0K │ 3.1G │
0.0% │ tmpfs │ tmpfs │
│ /sys/firmware/efi/efivars │ 192.0K │ 163.8K │ 23.2K │
█████████████████ 85.3% │ efivarfs │ efivarfs │
│ /tmp │ 15.6G │ 14.8M │ 15.6G │
0.1% │ tmpfs │ tmpfs │
│ /var/lib/incus/devices │ 250.0M │ 0B │ 250.0M │
0.0% │ tmpfs │ tmpfs │
│ /var/lib/incus/guestapi │ 100.0K │ 0B │ 100.0K │
0.0% │ tmpfs │ tmpfs │
│ /var/lib/incus/shmounts │ 100.0K │ 0B │ 100.0K │
0.0% │ tmpfs │ tmpfs │
╰───────────────────────────────────────────┴────────┴────────┴────────┴────────────────────────────┴──────────┴────────────╯
```
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