Here's a working suspend log from 10.10. There is one difference to the 11.04 log. In 11.04 log the network suspend apparently fails, but in 10.10 doesn't: 10.10 network suspend: Running hook /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: Having NetworkManager put all interaces to sleep...method return sender=:1.3 -> dest=:1.5724 reply_serial=2 Done. /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: success. 11.04 network suspend: Running hook /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: Having NetworkManager put all interaces to sleep...Failed. /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: success. Who knows if that's the reason for the failed resume?? full log from 10.10: Fri Apr 29 17:17:21 EEST 2011: Running hooks for suspend. Running hook /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/00logging suspend suspend: Linux silc 2.6.35-24-generic #42-Ubuntu SMP Thu Dec 2 02:41:37 UTC 2010 x86_64 GNU/Linux Module Size Used by btrfs 506518 0 zlib_deflate 21866 1 btrfs crc32c 3007 1 libcrc32c 1268 1 btrfs ufs 74447 0 qnx4 8101 0 hfsplus 78159 0 hfs 47396 0 minix 29321 0 ntfs 97516 0 vfat 10954 0 msdos 7960 0 fat 56244 2 vfat,msdos jfs 183125 0 xfs 766293 0 reiserfs 244968 0 nfs 321919 1 fscache 50226 1 nfs nls_utf8 1453 0 udf 86514 0 crc_itu_t 1739 1 udf cryptd 8140 0 aes_x86_64 7936 3 aes_generic 27631 1 aes_x86_64 binfmt_misc 7984 1 nfsd 306275 11 lockd 75956 2 nfs,nfsd nfs_acl 2701 2 nfs,nfsd auth_rpcgss 44898 2 nfs,nfsd sunrpc 229445 19 nfs,nfsd,lockd,nfs_acl,auth_rpcgss exportfs 4226 2 xfs,nfsd vmnet 47470 13 vmblock 12995 1 vsock 43307 0 vmci 60422 1 vsock vmmon 80151 0 parport_pc 30086 0 ppdev 6804 0 snd_hda_codec_atihdmi 3079 1 arc4 1497 2 snd_hda_codec_idt 64667 1 ath9k 101730 0 snd_hda_intel 26019 2 snd_seq_midi 5932 0 snd_hda_codec 100919 3 snd_hda_codec_atihdmi,snd_hda_codec_idt,snd_hda_intel snd_rawmidi 22207 1 snd_seq_midi snd_hwdep 6660 1 snd_hda_codec ath9k_common 6874 1 ath9k snd_seq_midi_event 7291 1 snd_seq_midi snd_pcm 89104 2 snd_hda_intel,snd_hda_codec snd_seq 57512 2 snd_seq_midi,snd_seq_midi_event snd_timer 23850 2 snd_pcm,snd_seq snd_seq_device 6912 3 snd_seq_midi,snd_rawmidi,snd_seq ath9k_hw 314699 2 ath9k,ath9k_common ath 10413 2 ath9k,ath9k_hw snd 64181 13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_rawmidi,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device mac80211 266625 2 ath9k,ath9k_common radeon 909450 3 soundcore 1240 1 snd cfg80211 170293 4 ath9k,ath9k_common,ath,mac80211 video 22176 0 lirc_ene0100 7819 0 joydev 11395 0 ttm 68212 1 radeon drm_kms_helper 32836 1 radeon snd_page_alloc 8588 2 snd_hda_intel,snd_pcm hp_accel 14304 0 drm 206230 5 radeon,ttm,drm_kms_helper psmouse 62080 0 output 2527 1 video uvcvideo 62379 0 lis3lv02d 10384 1 hp_accel videodev 49359 1 uvcvideo lp 10201 0 edac_core 46822 0 edac_mce_amd 9387 0 k10temp 3535 0 v4l1_compat 15519 2 uvcvideo,videodev v4l2_compat_ioctl32 12614 1 videodev lirc_dev 11209 1 lirc_ene0100 input_polldev 4527 1 lis3lv02d i2c_piix4 10047 0 i2c_algo_bit 6208 1 radeon serio_raw 4910 0 led_class 3393 2 ath9k,hp_accel parport 37032 3 parport_pc,ppdev,lp hp_wmi 6467 0 ahci 22210 2 r8169 42254 0 mii 5261 1 r8169 libahci 26052 1 ahci total used free shared buffers cached Mem: 4054516 3850352 204164 0 228088 2492708 -/+ buffers/cache: 1129556 2924960 Swap: 11879420 10264 11869156 /usr/lib/pm-utils/sleep.d/00logging suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/00powersave suspend suspend: /usr/lib/pm-utils/sleep.d/00powersave suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/01PulseAudio suspend suspend: Welcome to PulseAudio! Use "help" for usage information. >>> >>> Welcome to PulseAudio! Use "help" for usage information. >>> >>> Welcome to PulseAudio! Use "help" for usage information. >>> >>> Welcome to PulseAudio! Use "help" for usage information. >>> >>> Welcome to PulseAudio! Use "help" for usage information. >>> >>> /usr/lib/pm-utils/sleep.d/01PulseAudio suspend suspend: success. Running hook /etc/pm/sleep.d/10_grub-common suspend suspend: /etc/pm/sleep.d/10_grub-common suspend suspend: success. Running hook /etc/pm/sleep.d/10_unattended-upgrades-hibernate suspend suspend: /etc/pm/sleep.d/10_unattended-upgrades-hibernate suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/44bluetooth-known-quirk suspend suspend: /usr/lib/pm-utils/sleep.d/44bluetooth-known-quirk suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/45bluetooth-service suspend suspend: /usr/lib/pm-utils/sleep.d/45bluetooth-service suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/49bluetooth suspend suspend: /usr/lib/pm-utils/sleep.d/49bluetooth suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: Having NetworkManager put all interaces to sleep...method return sender=:1.3 -> dest=:1.5724 reply_serial=2 Done. /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/70action_wpa suspend suspend: /usr/lib/pm-utils/sleep.d/70action_wpa suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/75modules suspend suspend: /usr/lib/pm-utils/sleep.d/75modules suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/90clock suspend suspend: /usr/lib/pm-utils/sleep.d/90clock suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/95anacron suspend suspend: stop: Unknown instance: /usr/lib/pm-utils/sleep.d/95anacron suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/95led suspend suspend: /usr/lib/pm-utils/sleep.d/95led suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: Kernel modesetting video driver detected, not using quirks. /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/99video suspend suspend: kernel.acpi_video_flags = 0 /usr/lib/pm-utils/sleep.d/99video suspend suspend: success. Fri Apr 29 17:17:23 EEST 2011: performing suspend Fri Apr 29 21:18:43 EEST 2011: Awake.