Gentoo Archives: gentoo-user

From: Nils Holland <nholland@×××××.org>
To: gentoo-user@l.g.o
Subject: [gentoo-user] systemd-vconsole-setup: Suddenly fails after system rebuild
Date: Tue, 05 Dec 2017 09:43:14
1 Hi folks,
3 well, I have a weird issue here: Over the weekend, I switched to the
4 new 17.0 profiles, and as part of that process, did an "emerge -e
5 @world" on my ~x86/systemd machine. Took a while, but that was
6 expected, and I was glad to see that afterwards everything was still
7 working fine ... except for one thing:
9 Strangely, on the newly emerged system, after each boot, I noticed
10 that my desired keymap is no longer set on the virtual consoles. I get
11 an English keymap now, although I have set a German one, as per
12 /etc/vconsole.conf:
14 # cat /etc/vconsole.conf
15 KEYMAP=de-latin1-nodeadkeys
16 FONT=eurlatgr.psfu.gz
18 Now, the settings in this file have not been changed. In fact, no
19 configuration changes have been done along with the world re-emerge.
21 Actually, I can find a trace of something being wrong in the journal:
23 Dec 05 08:44:25 boerne systemd-vconsole-setup[1944]: /usr/bin/setfont failed with error code 65.
24 [...]
25 Dec 05 08:44:26 boerne systemd-vconsole-setup[1944]: Setting source virtual console failed, ignoring remaining ones
26 Dec 05 08:44:26 boerne systemd-udevd[1912]: Process '/lib/systemd/systemd-vconsole-setup' failed with exit code 1.
28 So, /usr/bin/setfont seems to fail. Strange that it obviously didn't
29 do that before the world re-emerge, but it's certainly doing it now.
30 Even more strange, however, is that after login, I can operate setfont
31 manually and it will succeed.
33 In fact, after login I can execute /lib/systemd/systemd-vconsole-setup
34 manually, or do "systemctl start systemd-vconsole-setup.service", and
35 either will complete without error and actually set my keymap and font
36 as desired.
38 My wild guess is that during boot, systemd-vconsole-setup might get
39 called too early by systemd-udevd, when the desired font file is not
40 yet available (probably because still running in initramfs context)
41 or when the virtual console, for whatever reason, is not yet ready.
42 But like I've said, that's just a wild guess, I couldn't really find
43 any proof for that in the journal.
45 Looking at the original systemd-vconsole-setup.service file, things
46 look sane in there, I guess:
48 [Unit]
49 Description=Setup Virtual Console
50 Documentation=man:systemd-vconsole-setup.service(8) man:vconsole.conf(5)
51 DefaultDependencies=no
53 ConditionPathExists=/dev/tty0
55 [Service]
56 Type=oneshot
57 ExecStart=/lib/systemd/systemd-vconsole-setup
59 However, as a little test / possible workaround, I decided to create
60 my own systemd unit file that does nothing more but execute
61 /lib/systemd/systemd-vconsole-setup, only at a (hopefully) later stage
62 during the boot process:
64 # cat /etc/systemd/system/vconsole-fix.service
66 [Unit]
67 Description=Fix Virtual Console
68 Before=-.mount
69 ConditionPathExists=/dev/tty0
71 [Service]
72 Type=oneshot
73 ExecStart=/lib/systemd/systemd-vconsole-setup
75 [Install]
78 And after enabling this unit, things actually work just fine: My
79 keymap is, once again, set up properly on the virtual console right
80 after boot and before I log in or perform any manual steps.
82 Sadly, I'm kind of confused now. I'm really wondering if anyone's ever
83 seen something like that before or otherwise has an explanation for
84 it. I mean, it used to work before, and neither configuration nor
85 package versions have been changed. It's just that everything has been
86 re-build (as PIEs), but I can hardly imagine that this is responsible
87 for the issue.
89 Right now, I'm waiting for a second machine to complete the re-emerge
90 process (might take another while) and am then really curious to see
91 if it suddenly suffers from the same oddity. Other than that, the only
92 idea that I currently have is to keep the workaround deployed and have
93 a look if the issue disappears again by itself just as suddenly as it
94 started, probably with a forthcoming version of systemd or something.
95 Of course, understanding things is always preferrable than just
96 hoping for them to fix themselves, so if someone has a clue, I'd be
97 more than glad to hear about it! :-)
99 Greetings
100 Nils