Bug 103460 - Default monitor resolution for Nokia 447Za incorrect
Default monitor resolution for Nokia 447Za incorrect
Product: Red Hat Linux
Classification: Retired
Component: redhat-config-xfree86 (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Brent Fox
Depends On:
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Reported: 2003-08-31 03:49 EDT by Thue Janus Kristensen
Modified: 2007-04-18 12:57 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Last Closed: 2003-10-16 14:54:45 EDT
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Description Thue Janus Kristensen 2003-08-31 03:49:50 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030827

Description of problem:
The default monitor resolution for my Nokia 447Za chosen during installation is
way off. Bad enough that X wouldn't run before I corrected the resolution.

It does detect the monitor correctly.

These are the correct values, taken from my monitor manual:
HorizSync	31-68
VertRefresh	60-85

Version-Release number of selected component (if applicable):
(the one that came with RH9)

How reproducible:

Steps to Reproduce:
1. Reconfigure X with a Nokia 447Za monitor
2. ...
3. Profit! (You must have heard that joke before...)

Additional info:
Comment 1 Thue Janus Kristensen 2003-08-31 03:55:21 EDT
Sigh - Iam not awake yet. I meant "refresh rates" where I said "resolution"
above. Sorry about that.

Now that I am at it, the best resolution (Yes, I do mean resolution) to run a
Nokia 447Za under is 1152x864, not 1024x768 as is default. (It maximizes screen
area under acceptable refresh rate; I saw this recommened in reviews of the
monitor, and I agree).

Comment 2 Brent Fox 2003-10-15 22:50:18 EDT
Are you sure?  Looking around on the web, I've found some differing data.  

On page 3 of http://sara.kgcomputer.com/documents/monitors/GA771.pdf, it says
that the Nokia 447Za does Horizontal 31-71 kHz and Vertical 50-120.

Then, on http://press.nokia.com/PR/199707/778221_5.html, it says the 447Za, "is
capable of a maximum refresh rate of 120 Hz, and has a horizontal frequency
range from 31 to 72 kHz."

Then, on http://press.nokia.com/PR/199903/777132_5.html, it says, "Top
horizontal frequencies range from the Nokia 447ZA's 86 kHz"

So I don't know what to believe.  As root, try running '/usr/sbin/ddcprobe' and
see if the monitor returns the refresh rates from the firmware.
Comment 3 Thue Janus Kristensen 2003-10-16 05:42:49 EDT
I can't find my manual right now, but those values I wrote was what it said.

Running ddcprobe supports rh's values:
[root@kg31 thue]# /usr/sbin/ddcprobe
Videocard DDC probe results
Description:  Intel Corporation Intel(R) 815 Chipset
Memory (MB):  1
Monitor DDC probe results
ID: NOK00ba
Name: Nokia 447Za
Horizontal Sync (kHZ): 30-72
Vertical Sync (HZ)  : 50-120
Width (mm): 300
Height(mm): 230

(note that the first link you gave was to another monitor model)

I think I have to retract the claim that the rates setup caused X to fail. I
tried installing the new rh beta, and even though it was configured with the
same rates X works fine.
I don't know why X failed to work when I installed RH9, and I don't know why
reconfiguring fixed it. I just assumed that since those values were at odds with
my manual (and chosing them differently in reconfigure made X work) that they
were at fault.
Comment 4 Brent Fox 2003-10-16 14:54:45 EDT
Ok, well, the vaules that the firmware returned (50.0-72.0) and (50.0--120.0)
exactly match what we have in the MonitorsDB file, so I think we should leave
the refresh rates alone.  I'm going to close as "Rawhide" since the problem does
not appear in the Fedora beta.

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