Bug#939127: vbetool quits with message "mmap /dev/zero: Operation not permitted" and does nothing
Package: vbetool
Version: 1.1-4+b1
Severity: normal
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Hello!
I use vbetool to blank a server will doing things.
So I typed at its console (not in a terminal or so - there is no X and this is a real tty!) as /root:
# vbetool dpms off
and expect the monitor to switch to black.
But now I get:
mmap /dev/zero: Operation not permitted
Failed to initialise LRMI (Linux Real-Mode Interface)
This was working a long time but now (since upgrade to Debian bullseye) this is gone!
Seems not a new problem - on Fedora/Redhads Bugzilla I found exactly the same problem. Please see this:
"Bug 710711 - vbetool fails to map executable memory
<https://bugzilla.redhat.com/show_bug.cgi?id=710711>"
Thanks for your attention!
- --
Kindly regards
Joerg Schiermeier
Bielefeld/Germany
- -- System Information:
Debian Release: bullseye/sid
APT prefers testing
APT policy: (990, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.2.0-2-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=de_DE.utf-8, LC_CTYPE=de_DE.utf-8 (charmap=UTF-8), LANGUAGE=de:en_GB (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages vbetool depends on:
ii libc6 2.28-10
ii libpci3 1:3.6.2-2
ii libx86-1 1.1+ds1-10.2
vbetool recommends no packages.
vbetool suggests no packages.
- -- no debconf information
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