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Old 12-21-2007, 09:21 AM   #1
Registered: Jun 2006
Distribution: Fedora 14
Posts: 51

Rep: Reputation: 15
Screen resolution and refresh rate problem

Hi to all!

I used to use Gnome. There, I used 1024x768, had 85Hz refresh rate (=vertical something???) and quite a nice time.
When I started using more graphical applications, and installed KDE in addition to my Gnome, I decided to change the resolution to 1280x1024.
After a few nice minutes, I discovered that the display flashes, and when I checked the refresh rate, I found out it was set on 60Hz. Any attempt to change that has failed. It drives me crazy...

My questions are:
* Is there a way to allow bigger refresh rate? (when I open display options and choose 1024x768, it ONLY allows 85Hz, and when I choose 1280x1024, it ONLY allows 60Hz.
* If not: is it my only option, to stay with either 1024x768 or 60Hz? It seems a bit strange, because my screen (Compaq FS740) is quite new and good...

I've read several posts regarding this subject, but found nothing I could understand (I'm not good at configuring stuff manually).
I did see something called gtf, and when I used "gtf 1280 1024 85 -x" I got:
  # 1280x1024 @ 85.00 Hz (GTF) hsync: 91.38 kHz; pclk: 159.36 MHz
  Modeline "1280x1024_85.00"  159.36  1280 1376 1512 1744  1024 1025 1028 1075  -HSync +Vsync
If you could make me understand what this means, and what I can do with this, it would be wonderful!

And a little information, if it helps:
00:00.0 Host bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface (rev 01)
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
05:04.0 Multimedia controller: Sigma Designs, Inc. REALmagic Hollywood Plus DVD Decoder (rev 02)
Kernel and Dist
Fedora 7
Old 12-21-2007, 12:48 PM   #2
LQ Guru
Registered: Feb 2003
Location: Mineral, Virginia
Distribution: Debian 8
Posts: 7,893

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What you have run into is hardware limitations. This web page gives the specs of the various resolution-speed combinations that the Compaq FS740 will run at.

Steve Stites
Old 12-22-2007, 10:17 AM   #3
Registered: Jun 2006
Distribution: Fedora 14
Posts: 51

Original Poster
Rep: Reputation: 15
Bummer, but thanks...

Good day ,


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