Bug 108008

Summary: xrandr detects wrong refresh rate for lcd screens
Product: [Fedora] Fedora Reporter: Damian Menscher <menscher>
Component: XFree86Assignee: Mike A. Harris <mharris>
Status: CLOSED ERRATA QA Contact: David Lawrence <dkl>
Severity: low Docs Contact:
Priority: medium    
Version: rawhide   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: 4.3.0-43 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2003-11-03 14:50:58 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
XF86Config file
none
XFree86.0.log none

Description Damian Menscher 2003-10-26 03:50:23 UTC 
Description of problem:
I'm on a laptop with 1920x1200 screen.  As everyone knows, all LCD screens are
60Hz refresh rate.  But xrandr thinks the refresh rate is 59Hz, which is kinda
freaky.

Version-Release number of selected component (if applicable):
XFree86-4.3.0-37

How reproducible:
Always

Steps to Reproduce:
1.xrandr
 

Additional info:

# xrandr
 SZ:    Pixels          Physical       Refresh
*0   1920 x 1200   ( 650mm x 406mm )  *59
 1   1600 x 1200   ( 650mm x 406mm )   59
 2   1400 x 1050   ( 650mm x 406mm )   59
 3   1280 x 1024   ( 650mm x 406mm )   59
 4   1280 x 960    ( 650mm x 406mm )   59
 5   1024 x 768    ( 650mm x 406mm )   59
 6    800 x 600    ( 650mm x 406mm )   59
 7    640 x 480    ( 650mm x 406mm )   59
 8    640 x 350    ( 650mm x 406mm )   59
 9    640 x 400    ( 650mm x 406mm )   59
 10   720 x 400    ( 650mm x 406mm )   59
 11  1152 x 864    ( 650mm x 406mm )   59
 12   832 x 624    ( 650mm x 406mm )   59
 13  1152 x 768    ( 650mm x 406mm )   59
 14  1600 x 1024   ( 650mm x 406mm )   59
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none
Comment 1 Mike A. Harris 2003-10-30 07:32:01 UTC 
Attach your X server log and config file.
Comment 2 Mike A. Harris 2003-10-30 07:51:36 UTC 
Actually... I just talked to Keith, and also triggered a memory of a rounding
error in RandR, recently fixed in CVS.  I believe it is highly likely causing
the problem you are seeing.  I've backported a fix for this and it is present
in 4.3.0-42.2, and later builds.  Once this is available for testing, please
confirm wether or not it fixes the problem for you.  I'll try to remember
to update the report when a build is ready, but if you can check rawhide
or my ftp space on people.redhat.com you might find a build sooner.

Thanks.
Comment 3 Damian Menscher 2003-11-01 23:12:03 UTC 
Created attachment 95654 [details]
XF86Config file
Comment 4 Damian Menscher 2003-11-01 23:12:59 UTC 
Created attachment 95655 [details]
XFree86.0.log

Here's the second attachment you requested (not sure if you still need these,
but....)
Comment 5 Mike A. Harris 2003-11-03 14:50:58 UTC 
Fixed in 4.3.0-43 available from:

ftp://people.redhat.com/mharris/testing/unstable/XFree86

Closing as "RAWHIDE" for now as this will be pushed into rawhide
later on.
Comment 6 Mike A. Harris 2003-11-03 14:52:17 UTC 
Oh, forgot to mention....   please update this report to indicate
if the fix works for you or not.
Comment 7 Jay Turner 2004-01-16 16:58:43 UTC 
An errata has been issued which should help the problem described in this bug report. 
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen 
this bug report if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2003-406.html