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Ok, i realize I am not the only one, but I will try to provide all info possible to make it exemplary as possible and narrow down the error sources.

I have a fresh install of Ubuntu 12.04 and the suspend worked fine upon having it freshly installed but now it does not anymore.

The suspend option from the system power button on the top right works fine.

Things I did do which I don't know if they are related:

  • Install and remove againthe FGLRX drivers (Radeon graphic card)
  • Install Jupiter power managment (shutting it down is not changin anything)
  • Plug in and out an external display

The configuration I know of is well set:

  • In System Settings/Power all is set to suspend when closing lid
  • Double checked with dconf-editor, everything set to suspend

So, from here on I don't know how to proceed.. what are common problems that cause this error?

EDIT: My computer model is: Samsung Series 5 14" NP530U4BI

$ sudo lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port 
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller 
00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 
00:1a.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 
00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller
00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 
00:1c.3 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 
00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 
00:1d.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 
00:1f.0 ISA bridge [0601]: Intel Corporation HM65 Express Chipset Family LPC Controller [8086:1c49] (rev 04)
00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller 
00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 04)
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7500M/7600M Series]
02:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
04:00.0 USB controller [0c03]: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller
share|improve this question
    
We need more hardware information to help you, can you look at this question and then edit your question adding the information. – Jorge Castro May 4 '12 at 0:31
    
Ok, is this what ok what i posted? – dmeu May 4 '12 at 16:13
    
The model of laptop would be real useful too – Jorge Castro May 4 '12 at 16:21
    
hehe, ok, put. I assumed it may be a common problem, doesnt seem so if it is dependent on all this information.. ? – dmeu May 4 '12 at 22:48
    
Power management stuff is always hardware dependant, down to the specific model usually. – Jorge Castro May 4 '12 at 22:49

Yes I'm experiencing the same issue with my Acer Aspire 7535G with a Radeon graphics card as well. This is the bug report I have issued: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/989674 Keep an eye on it for possible fix or support in the future.

In the time being do what I do to wake it back to GUI. Hit Ctrl + Alt + F6 to open a Ttyl terminal then hit Ctrl + Alt + F7 to reload the GUI.

Hope that helps!

share|improve this answer
    
my problem is somewhat different as the suspend option works perfectly but is just not invoked when i close the lid.. frustrating :-) – dmeu May 4 '12 at 15:47

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