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I have just installed Ubuntu 12.04 LTS as a primary ext4 partition (as a sole OS) and set the swap partition over double my RAM which was 3 GB (Swap partition is currently 10 GB).

The thing that I just experienced is having the fonts and texts just garbled after resuming hibernation, I was wondering if there is an incompatibility with my graphic card driver or something else?

This is the Snapshot of the current OS view

I have the Intel GM45 display driver chipset for graphic (Further Information Below).

 *-display:0             
       description: VGA compatible controller
       product: Mobile 4 Series Chipset Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:f6c00000-f6ffffff memory:e0000000-efffffff ioport:efe8(size=8)

  *-display:1 UNCLAIMED
       description: Display controller
       product: Mobile 4 Series Chipset Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2.1
       bus info: pci@0000:00:02.1
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
       resources: memory:f6b00000-f6bfffff
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 12.04.2 LTS
Release:    12.04
Codename:   precise
Linux amir-labtop 3.2.0-37-generic-pae #58-Ubuntu SMP Thu Jan 24 15:51:02 UTC 2013 i686 i686 i386 GNU/Linux
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
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2 Answers 2

Hi I've the same error on my Lenovo X200 with intel driven graphics, too. Have You found a solution or some hints. It's extrem complicate to describe this behavior on mail lists or bug trackers. I think You know what I mean ;)

UPDATE: This URL points out that's an intel driver issue. I think we have to wait .....

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yup, i think that's right, I have tried to report the bug several times but nothing good have come out of this. Do you know any better (let's say more official ways) to report the problem to Ubuntu ? –  Amir Apr 22 '13 at 14:54
    
check my new answer buddy ;) –  Amir Dec 18 '13 at 15:02
up vote 0 down vote accepted

well, as of now after upgrading my RAM modules to dual channel (8GB) on my Inspiron laptop, the persisting problem seems to be gone away automatically after a couple of weeks. Therefore, i assume, the garbled font problem was basically nothing than a low memory allocation after hibernation (or generally any memory consuming task like using Matlab, etc). Ubuntu automatically changed my 10 GB swap to 13 GB and all seems fine so far.

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