Tuesday, 24 May 2011

Arch Linux: How to Make Resume from Hibernate Work

I usually don't use the Hibernate function much, but lately I have been wondering why it was that my Arch installation did not resume from swap when my new Slackware 13.37 on the same laptop had no such problems.
Two things. I found I didn't actually have a swap partition in Arch as through some fooling around a while ago the UUID of the swap partition had changed, and Arch identifies partitions by this ID by default.

But even after I had rectified the problem by entering the correct UUID into fstab I was able to hibernate, but the system booted up normally when it was supposed to resume. Btw, here's a link on how to set up and make active a swap partition and perhaps more interestingly a swap file.

The other issue is that simply following the helpful tip to add resume=/dev/sdaX or the UUID equivalent to your kernel line in Grub, which apparently needs to be inserted before the ro vga= part, is not enough. There are as always many different ways, what I am setting out here applies to a set up with laptop mode tools and pm-utils.

If you're using UUID insert resume=/dev/disk/by-uuid/whatever-random-UUID-number after the root= entry on your kernel line, or if you have an encrypted set up something similar to

kernel /vmlinuz26 cryptdevice=/dev/sda2:main root=/dev/mapper/main-root resume=/dev/disk/by-uuid/whatever-random-number-here ro

That's only half the job though. Now we have to create a hook and rebuild the initramfs. For this to work we need to edit /etc/mkinitcpio.conf (as root) and add resume to the Hooks array, similar to this
HOOKS="base udev autodetect ide scsi sata lvm2 resume filesystems "

Note that resume has to be after scsi sata lvm2 and before filesystems. Finally, issue

#mkinitcpio -p kernel26

and we should be done. Next time you come out of hibernation you should see a screen 'unfreezing' or rather decompressing the previous session.

The process is well documented on the Arch Wiki but needs a fair amount of digging among the results when doing a search.

1 comment:

  1. Thanks very much. This is I was looking for a long time.
    Sorry for my english.

    ReplyDelete

Please leave your comment here. Spam will be deleted.

Note: only a member of this blog may post a comment.

12.04 LTS (1) 1280x1024 (2) 14.1 (1) absolute (6) accessibility (6) ad-blocking (2) administration (2) afterstep (1) android (3) announcements (15) anonymity (5) anonymous (1) anonymous browsing (1) anti-malware (1) anti-virus (1) antiX (4) applications (1) arch (11) archbang (11) archone (1) artix (2) authentication (1) backports (1) base (1) bash (2) bittorrent (2) block-this (1) bluestar (1) bodhi (1) books (1) brave (1) brave-browser (1) browsers (8) browsing (1) bsd (4) bug (2) bugs (3) calculate (1) centos (1) certification (1) chakra (2) changelog (22) chat (1) chatzilla (1) chromebook (1) chromium (2) click (1) commodore 64 (1) ControlD (1) critique (1) crunchbang (5) crux (1) ctkarch (1) cyber war (1) debian (29) desktop (62) devuan (6) digital certificates (1) digital memories (1) distributions (75) DNS (1) documentaries (1) documentation (2) dr. web (1) drivers (1) duo (1) e17 (1) email (1) encryption (3) enlightenment (1) events (1) exit nodes (1) ext4 (1) fake (1) fallout (1) fallout 4 (1) fedora (6) file server (2) file systems (1) firefox (3) flash (1) flush (1) fluxbox (7) fluxflux (1) FPS (2) free software (3) frugalware (1) FSF (1) ftp (2) furybsd (1) fusion (1) fvwm (1) fvwm-crystal (1) games (11) gaming (10) gentoo (3) gnome (9) gnome shell (4) gnu/linux (4) google (2) google-chrome (3) graphics (1) grml (1) gtk+ (1) hangouts (1) hardcore punk (1) hardware (3) how-to (23) humor (2) i3 (1) icewm (6) init (3) init freedom (5) interview (1) introduction (1) jibbed (1) jwm (2) kanotix (4) kde (21) KDE neon (1) kde3 (2) kernel (6) knoppix (1) kodi (2) kongoni (2) kubuntu (3) LAS (1) libtorrent-rasterbar (1) linux (20) linux light (16) Linux Mint (6) live (50) live medium (28) live system (13) liveslak (3) LMDE 4 (3) localisation (1) LTS (1) lxde (12) lxqt (1) mageia (1) mandriva (2) manjaro (1) marine life (1) mate (1) media center (6) mepis (2) mint (5) mobile (2) mobile security (1) movies (6) mozilla (3) music (1) MX Linux (1) netbook (2) netrunner (1) networking (5) news (3) nvidia (1) open source (1) openbox (15) openSUSE (4) opinion (13) other (5) overclockix (1) packages (1) pclinuxos (4) perl (1) plasma (5) poll (2) porteus (3) privacy (5) privoxy (1) programming (1) proxy (2) puppy (3) qbittorrent (1) qt (1) quick look (10) ratpoison (1) red hat (7) redcore linux (1) relax (1) release (2) rescue (3) reviews (57) rhythmbox (1) rolling (1) RPG (2) rpm (1) sabayon (5) salix (15) scientific (7) screenshots (2) scripts (3) seamonkey (1) security (4) semplice (1) server (5) shell (1) shooter (4) siduction (1) slackel (1) slackware (68) slackware 14.2 (2) slackware 15.0 (8) slackware-current (34) slax (7) slitaz (1) smart phones (2) sms (1) south africa (2) specialist (1) spoof (1) ssh (1) surfing (1) systemd (2) table mountain (1) TDE (1) tegra k1 (1) The Walking Dead (1) themes (1) tinyme (2) tips (1) tor (3) torrenting (1) torrents (1) traffic analysis (2) trinity (2) trisquel (1) TV shows (2) TWD (1) ubuntu (6) unity (2) unity linux (4) unix (1) upgrade (6) vector (2) video (4) vinux (2) virtualbsd (1) visual impairment (5) voip (1) vpn (5) VSIDO (1) wallpapers (3) window maker (4) window managers (1) windscribe (1) wireless (10) xfce (16) youtube (1) zenwalk (3) zombies (1) zoo (1)