Package: file Version: 1:5.44-3 Severity: normal Dear Maintainer,
UEFI systems make the boot logo accessible for reading at the path /sys/firmware/acpi/bgrt/image The file can be displayed directly using for example: $ feh /sys/firmware/acpi/bgrt/image Strange things happen when you copy this file elsewhere: $ cp /sys/firmware/acpi/bgrt/image /tmp/image and then run `file` on it: $ file /sys/firmware/acpi/bgrt/image /tmp/image /sys/firmware/acpi/bgrt/image: data /tmp/image: PC bitmap, Windows 3.x format, 434 x 432 x 24, image size 565056, cbSize 565110, bits offset 54 If you diff those files, they are the same: $ diff -s /sys/firmware/acpi/bgrt/image /tmp/image Files /sys/firmware/acpi/bgrt/image and /tmp/image are identical If you use the -d flag for `file`, it will produce internal debugging information: $ file -d /sys/firmware/acpi/bgrt/image >/tmp/sys-firmware-acpi-bgrt-image.log 2>&1 $ file -d /tmp/image >/tmp/tmp-image.log 2>&1 If you then diff those logfiles, you can notice that that /tmp/sys-firmware-acpi-bgrt-image.log only uses nbytes=4096, whereas /tmp/tmp-image.log uses nbytes=565110. /tmp/sys-firmware-acpi-bgrt-image.log also fails to match the bitmap for unknown reason. Please forward this bug upstream if it's not only on debian, thank you. -- System Information: Debian Release: 12.0 APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 6.1.0-9-amd64 (SMP w/1 CPU thread; PREEMPT) Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages file depends on: ii libc6 2.36-9 ii libmagic1 1:5.44-3 file recommends no packages. file suggests no packages. -- no debconf information
