Bad monitor refresh rate after upgrading to 10.04?

[h4x0rmx]

I just upgraded to 10.04 and I've noticed some flickering on my monitor... if I'm correct, the problem is the refresh rate. It is set to 60 Hz and it doesn't give me any options to change it.
I would guess that the display drivers are installed correctly because I'm running a lot of CompizConfig effects without a problem
Is there anything else that could be causing this problem?
How can I fix it?

[h4x0rmx]

This might be helpful


:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
:~$ sudo lshw -C video
*-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 bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:32 memory:d0000000-d03fffff memory:c0000000-cfffffff(prefetchable) ioport:7110(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:d5400000-d54fffff

[h4x0rmx]

anyone?

[smartygeek]

i have this problem, too

[JoWi]

I'm having the same problem: With my HP laptop, my external (very old, but huge and good) monitor supports 1280x1024 at 100Hz (even more, but this is all I need), which I had been able to use with Ubuntu <=9.10 (by inserting a configuration section, see below).

Now, after upgrading to 10.04 Lucid, it got stuck at 60Hz. I can select only values up to 60Hz.

I've tried to paste my "Monitor" section from 9.04



Section "Monitor"
Identifier "NECMultiSyncFE1250plus"
DisplaySize 402 300
HorizSync 30.0-105.0
VertRefresh 68.0-165.0
Modeline "1280x1024@100Hz" 247.50 1280 1408 1712 2272 1024 1024 1028 1089
EndSection

into the new /etc/X11/xorg.conf and activate it (by replacing "0-CRT1" by "NECMultiSyncFE1250plus" further down in the file) but then x11 wouldn't start any more (splash screen freezes after boot).

I've also tried to insert the lines "DisplaySize" .. "Modline" into the existing "Monitor" "0-CRT1" section of xorg.conf – but this didn't solve the original problem neither.

Any suggestions?

[rapchee]

it seems they have changed the way the configuration data is stored, so old manuals won't help, and yet there is no new version :/

[dfacto]

Also having this problem. Its very hard to search for bug reports because I am not sure how exactly to describe the "flickering." There seems to be no pattern to it, other than when it finally does start, it seems to continue more frequently (not increasingly so, just more, if you take my meaning). For me, it always happens on the bottom 1/6 to 1/3 of the screen--although the whole screen may blank (I just can't tell!).

Anyway I'm pretty good with xorg at this point in my life and have tried all the tricks I know of. I'm open for any/all suggestions/advice.

Cheers!

[ZED RINO]

On my laptop with 9.04 I was using 2 monitors and this was great to do designs with inkscape. After SMART failed I installed 10.04 on a new hard drive... Bad idea ! Even if it's faster, many things are not functioning, and especially dual monitor. Fresh rates is not configurable. Nothing really on the internet except this post and nothing new.
I wish next ubuntu will be better than the 10.04...