Hello.

I am using my laptop with Ubuntu 11.04.
I cannot configure the resolution of my additional monitor.
I installed Ubuntu 11.04 on my Laptop Samsung Sens X420

lspci result is the follows
===========================================================================
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
02:00.0 Network controller: Intel Corporation WiFi Link 5100
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
================================================================================

2nd monitor is 20 inch. But I cannot set it higher resolution rather than 1024 x 768

What should I do for my OS to detect my monitor?

Hello,

What kind of monitor do you have exactly? Most likely, either your monitor doesn't support any resolutions higher that what you gave us, or you are using the drivers. Could you give us the output of lsmod?

Cheers,

Josh

I have had this problem since Karmic, only installed on my laptop not my desktop. I could not get the resolution of the second monitor above the native resolution of my monitor. Although i didn't try configuring configuring xorg.conf by hand I did use the GUI to no avail. Fedora doesn't have that problem. No matter what I hook up to the second output, LCD or 60" flat screen, on my laptop or desktops, they show up and I can configure the resolution as I see fit. If 1024x768 is the highest native resolution that your laptop support, then you are more than likely stuck. You might have some luck configuring xorg.conf by hand, I don't know if that will work as I installed Fedora after finding this problem.