Flickering Screen - Ubuntu 10.04

[Lauren03001]

So from doing some googling I've found that my problem is not a terribly uncommon problem, but being a total computer moron I have no idea which fix is right for my computer ...

I just upgraded to Ubuntu 10.04 and my screen flickers every once in a while. The flickering is horizontal multi colored lines across the lower half of the screen, and there doesn't seem to be any pattern to why or when it happens. The lines occasionally freeze on the screen until I do something else.

From what I've read, it sounds like the default video driver is too advanced for my old computer and there is a simple fix if I uninstall that driver and replace it with the and older one. However, I have no idea how to figure out which driver I need. I'm a little horrified of just guessing, especially since I'm not 100% sure the driver is in fact the problem.

My computer is a Dell Inspiron 1545, and I bought it I think 3 years ago? And of course I have no record of what my video card specs are ...

[trustinglittle]

HEllo don't know if I can help but lets start with this

run the following in Application>Accessories>terminal

sudo lshw

then post the output to here.

[Lauren03001]

here is up through the display info:

dell-desktop
description: Computer
width: 32 bits
*-core
description: Motherboard
physical id: 0
*-memory
description: System memory
physical id: 0
size: 1976MiB
*-cpu
product: Pentium(R) Dual-Core CPU T4200 @ 2.00GHz
vendor: Intel Corp.
physical id: 1
bus info: cpu@0
version: 6.7.10
serial: 0001-067A-0000-0000-0000-0000
size: 1200MHz
capacity: 1200MHz
width: 64 bits
capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx x86-64 constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm cpufreq
configuration: id=0
*-logicalcpu:0
description: Logical CPU
physical id: 0.1
width: 64 bits
capabilities: logical
*-logicalcpu:1
description: Logical CPU
physical id: 0.2
width: 64 bits
capabilities: logical
*-pci
description: Host bridge
product: Mobile 4 Series Chipset Memory Controller Hub
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 07
width: 32 bits
clock: 33MHz
configuration: driver=agpgart-intel
resources: irq:0
*-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: bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:30 memory:f6c00000-f6ffffff memory:e0000000-efffffff(prefetchable) 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: bus_master cap_list
configuration: latency=0
resources: memory:f6b00000-f6bfffff