Problems with low hsync with nwn on Gentoo

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Author: Emmanuel Gravel
Date:  
To: plug-discuss
Subject: Problems with low hsync with nwn on Gentoo
I have recently updated my system to the latest world. Here are the
major changes:

- using udev instead of devfs
- using kernel 2.6.9-r13 instead of 2.4.26
- using X.org instead of XFree86
- using the latest nvidia drivers (6629)
- using the latest Gnome
- updated nwn from 1.62 to 1.65

The problems I saw happened before the update to nvidia and x.org (was
running XFree on the old 5xxx driver). So the change happened either
because of udev, kernel or the nwn update.

Running natively at 1280x1024, 91KHz/85Hz. I'm running nwn at 1024x768
so it has to switch resolution for the game. Everything is smooth if I
go to 1280x1024 but since this is on-board graphics with an nForce2
chipset... The scan rates are 35/87 (very, very low hsync). When I reset
the native resolution to 1024x768 and restart X, it runs at 68/85, both
in X and in the game. If, in 1280x1024, I run the game at the same res,
it scans at 64/60.

I'm trying to get the game to run at a better scan rate, as it used to
in the past, since an hsync of 35 flickers a lot, and shows some very
ugly lines. Has anyone here seen this, and/or solved this issue?


As a side note, during the update I had lost my mouse wheel. I'm also
using a KVM. Here's what I did to re-enable the mouse wheel "forever":

Kernel config:
CONFIG_INPUT_EVDEV=y
(or, from make menuconfig:
Device Drivers > Input device support > Event interface)
This is what enables the wheel input.

Grub config:
kernel /kernel-2.6.9-gentoodev-r13 root=/dev/hda2 psmouse.proto=imps
VERY IMPORTANT is the psmouse.proto=imps since this is what keeps the
wheel mouse enabled when switching between computers.

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