ATI Radeon HD 7750- Debian Jessie.

pan64 · 05-19-2015, 06:31 AM

have you tried glxgears?

jmuller1984 · 05-20-2015, 03:27 AM

Hello,

Yes Glxgears runs and output is :

Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
299 frames in 5.0 seconds = 59.644 FPS
297 frames in 5.0 seconds = 59.359 FPS
281 frames in 5.0 seconds = 56.148 FPS
299 frames in 5.0 seconds = 59.744 FPS

pan64 · 05-20-2015, 06:08 AM

so it means acceleration is ok (as far as I know), openGL is working properly.

jmuller1984 · 05-24-2015, 01:15 AM

Good news.

I have successfully flashed my BIOS.

I can now run my full 4gig of RAM with my video card.

Yay.

And my flightgear framerate has jumped to 8FPS. That's almost double!

I still suspect there is still a software issue somehwere, but at least I'm happier that I'm not chasing a hardware issue.

pan64 · 05-25-2015, 04:28 AM

from my point of view, if glxgears reported 60 FPS that should be ok. Probably your settings are not really ok. I could reach 20-40 FPS with FlightGears using HD 7750 and on debian 8

jmuller1984 · 05-28-2015, 05:18 AM

Hello Pan64,

Can you tell me more about the machine you were running it on ?

What processor and RAM did it have ?

Thanks,

pan64 · 05-28-2015, 06:51 AM

Asus M5A97 R2.0 AMD FX 8320, 16 GB RAM, SSD and ATI HD 7750.

jmuller1984 · 06-19-2015, 11:34 PM

Good news,
I upgraded to a quad-core Phenom 9750 (the best my motherboard can take ($65 ebay)).

I was getting somewhere near 15 FPS.

Just this morning I upgrade flightgear to 3.4.0 and am getting 20FPS.

I think we can call this one solved.

Thanks for everyones help.

For the record :
The initial issue (ring buffer failure) was due to a BIOS bug. Upgrading the BIOS fixed this.
The remaining issues were just CPU power. (The BIOS update also allowed me to run a better processor).

Thanks again.

jmuller1984 · 06-26-2015, 09:19 AM

... after all this time of about a week of everything running fine. My harddrive failed (click of death).

The good news is it took me only about an hour to reinstall the whole operating system. Everything worked just fine right out of the box. I guess once the hardware is ironed out, the software has much less trouble. (and I guess the reverse is true, the trick is knowing which one is to blame.)