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Thanks for your time. I upgraded to Ubuntu 12.04 from 11.10. My screen resolution is stuck at 1366x786. I have tried setting up higher resolution using xrandr command as explained here but it is not working.

My previous question about 11.10 has remained unanswered for the long time and as this is for 12.04, I have created this new question in the anticipation that the problem may be resolved in this LTS version.

Out put of xrandr command is as follows:-

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 4096 x 4096
VGA1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm
   1366x768       59.8*+
   1024x768       75.1     75.0     60.0  
   832x624        74.6  
   800x600        75.0     60.3     56.2  
   640x480        75.0     60.0  
   720x400        70.1  
   1440x900_75.00   75.0  
   1440x900_74.00   74.0  

Output of lspci is as follows:-

00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
00:1d.0 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA Controller [IDE mode] (rev 01)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
01:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

Please help,

P.S. What is interesting is WinXP on the same machine is able to see the mode upto 1600x1200.

share|improve this question
up vote 0 down vote accepted

As a matter of fact, physical resolution of your monitor is 1366x768, the very first link in google proves this:

With LCD monitors, setting resolution above physical makes absolutely no sense. Whatever Win XP "sees" is a bug - actually, WinXP was created before LCD monitors became mainstream.

share|improve this answer
Well, then why does xrandr reports "maximum 4096 x 4096"? – Ubuntu User Apr 20 '12 at 12:09
That's what your video adapter can do. But for monitor, any non-native resolution would result in blurriness and poor image quality because of scaling – Sergey Apr 20 '12 at 22:06

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