Go Back   nV News Forums > Linux Support Forums > NVIDIA Linux

Newegg Daily Deals

Thread Tools
Old 12-20-07, 07:52 AM   #1
Registered User
Join Date: Feb 2007
Posts: 25
Default G-Sync Lockup

I have a dual GPU (Quadro FX5600) with G-Sync option installed on a Concurrent RedHawk Linux system with 169.04 version of the NVIDIA Driver installed.

My problem is that I have an application that must restart the X server (I've tried two different methods for this: "killall -HUP X" or "/usr/sbin/gdm-restart"). After having the program restart the X server, I'm unable to access the G-Sync parameters.

Since I am restarting the X server, I must login to my target machine remotely to run these programs. I then set my DISPLAY environment variable to my target machine.

My actual program uses OpenSceneGraph 1.2 but I seem to have reproduced the problem using GLUT. In my OSG example, I restart the X server after deleting ALL OSG objects. In the GLUT example, I'm doing it in the ESC keyboard handler.

After restarting the X server (within the program) and the program exited, I then attempt to use nvidia-settings (at the command line) to query the FrameLock parameters and I'm getting a message that I don't have a FrameLock device.

At the command line, if I restart the X server (again), then I can access the framelock information.

It appears that something in the program is still handing onto the G-Sync card when the X server is restarted causing the G-Sync card to be "locked up" such that I can not query it. Once the program exits, it appears to free up what ever was locking it up and then restarting the X server (again) frees it up.

I also had this problem with 100.14.19 on the same machine.

When I run the exact same program on a machine with a single Quadro FX 4400 with the G-Sync option (running with 100.14.11 NVIDIA driver), I do not see the problem (i.e. I can access the framelock information immediately after restarting the X server.

I am not even using the G-sync in this test example, but I DO need to configure it (using the NV-CONTROL API) in my actual application.

Any idea what is going on here?

Paul P.
Attached Files
File Type: gz nvidia-bug-report.log.gz (29.3 KB, 88 views)
File Type: txt glutpoints.cpp.txt (2.0 KB, 86 views)
File Type: txt fltest.txt (194 Bytes, 94 views)
File Type: txt transcript.txt (1.2 KB, 109 views)
Paul1492 is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sync it up: Hands on with the preview of Windows 8's cloud sync service News Archived News Items 0 06-02-12 08:30 PM
SYNC With MyFord Touch: Automotive Infotainment For All News Archived News Items 0 05-31-12 05:40 AM
Vertical sync being forced on newer drivers with multi-card. Xevious NVIDIA Linux 0 05-11-12 05:31 AM
Reproducable Hard Lockup - RH 8.0 & 3123 brand NVIDIA Linux 6 10-05-02 03:48 PM
GeForce4 hard lockup with games under Windows XP Snap NVIDIA GeForce 7, 8, And 9 Series 6 09-27-02 02:37 PM

All times are GMT -5. The time now is 02:07 AM.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.