I'm running a BT5 R2 with Gnome 2.3 on an Acer Aspire One d270.
When I try to hibernate, what happens is that the screen turns black and shows a white _ in the upper left corner. When I try to suspend, it freezes for a few seconds and then the system acts as if nothing ever happened. It doesn't suspend and I can keep on working like before.

I couldn't find anything in the logs. For hibernate and suspend, they look pretty much the same:
Code:
Initial commandline parameters: 
Mon Oct 29 15:00:17 CET 2012: Running hooks for hibernate.
/usr/lib/pm-utils/sleep.d/000kernel-change hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/00logging hibernate hibernate:Linux bt 3.2.6 #2 SMP Sat Apr 21 23:15:23 CEST 2012 i686 GNU/Linux
Module                  Size  Used by
dm_crypt               22236  0 
joydev                 17161  0 
lp                     13321  0 
parport                34960  1 lp
arc4                   12473  2 
ath9k                 119585  0 
mac80211              410313  1 ath9k
psb_gfx               235975  1 
ath9k_common           13396  1 ath9k
ath9k_hw              387726  2 ath9k,ath9k_common
drm_kms_helper         30737  1 psb_gfx
drm                   183453  4 psb_gfx,drm_kms_helper
ath                    18480  3 ath9k,ath9k_common,ath9k_hw
cfg80211              160399  3 ath9k,mac80211,ath
rts_pstor             350011  0 
i2c_algo_bit           12980  1 psb_gfx
acer_wmi               23102  0 
sparse_keymap          13342  1 acer_wmi
psmouse                72465  0 
serio_raw              13027  0 
mac_hid                13037  0 
uvcvideo               66101  0 
videodev               82668  1 uvcvideo
dm_mirror              21585  0 
dm_region_hash         15035  1 dm_mirror
dm_log                 17871  2 dm_mirror,dm_region_hash
aufs                  162169  0 
wmi                    18273  1 acer_wmi
video                  18434  1 psb_gfx
r8169                  46895  0 
             total       used       free     shared    buffers     cached
Mem:       1013636     834044     179592          0      22020     387476
-/+ buffers/cache:     424548     589088
Swap:      2969596      18836    2950760
success.
/usr/lib/pm-utils/sleep.d/00powersave hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/01PulseAudio hibernate hibernate:stdin: is not a tty
stdin: is not a tty
success.
/etc/pm/sleep.d/10_grub-common hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/49bluetooth hibernate hibernate:not applicable.
/usr/lib/pm-utils/sleep.d/55NetworkManager hibernate hibernate:not applicable.
/usr/lib/pm-utils/sleep.d/75modules hibernate hibernate:not applicable.
/usr/lib/pm-utils/sleep.d/90clock hibernate hibernate:not applicable.
/usr/lib/pm-utils/sleep.d/91wicd hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/94cpufreq hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/95led hibernate hibernate:not applicable.
/usr/lib/pm-utils/sleep.d/98video-quirk-db-handler hibernate hibernate:success.
/usr/lib/pm-utils/sleep.d/99video hibernate hibernate:success.
/etc/pm/sleep.d/action_wpa hibernate hibernate:success.
Mon Oct 29 15:00:21 CET 2012: performing hibernate
The only difference between hibernate and suspend is that the suspend part has two additional lines:
Code:
Allocated buffer at 0x2010 (base is 0x0)
ES: 0x0201 EBX: 0x0000
I tried a few fixes that I've found online:
http://thecodecentral.com/2011/01/18...ot-working-bug
http://blog.techsoftsolutions.net/?p=369

But neither worked and I didn't really find other solutions. Most entries I'd find were issues where the system couldn't resume from hibernation or suspend, but mine doesn't even get that far.
This problem occurred right after the installation.

Any ideas?