Video Performance on UD-160-M


#1

Hello,

I received my UD-160-M that I’ve connected to a nearly-fresh install of Fedora 18. I was happy to notice that my computer automatically detected it and presented a normal log-in screen.

I thought I’d try my most important use case first. After ensuring Flash was installed, I went to YouTube and tried to play videos on both desktops simultaneously. The one on my built-in desktop played as well as before; however, the one on my new multiseat desktop was choppy in Firefox and as full-screen. It reminded me of when Adobe’s Flash 10 made my older software-rendering graphics cards stop working adequately.

Due to this, I would like to know what graphics adapter is built into the UD-160-M? Does it have any dedicated GPU, or does it rely on the CPU for graphics processing? If it’s the latter, then it makes these devices unusable to me because I don’t want poor performance during spikes of heavy CPU load.

I also tried to play a video using VLC Media Player. This worked fine on the original display, but did not work at all on the new display. I wouldn’t get a VLC window appear, and the console displayed the following message:

 xcb\_xv vout display error: no available XVideo adaptor 

Is this due to a wrong driver being loaded in what used to be xorg.conf?

FYI, here is my /proc/cpuinfo. I understand it’s a bit dated, but I would expect it to perform reasonably well for at least one multiseat client.

 processor : 0 
 vendor\_id : AuthenticAMD 
 cpu family : 15 
 model : 107 
 model name : AMD Athlon(tm) X2 Dual Core Processor BE-2400 
 stepping : 2 
 cpu MHz : 2300.000 
 cache size : 512 KB 
 physical id : 0 
 siblings : 2 
 core id : 0 
 cpu cores : 2 
 apicid : 0 
 initial apicid : 0 
 fpu : yes 
 fpu\_exception : yes 
 cpuid level : 1 
 wp : yes 
 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx 
 fxsr sse sse2 ht syscall nx mmxext fxsr\_opt rdtscp lm 3dnowext 3dnow rep\_good nopl extd\_apicid pni cx1 
 6 lahf\_lm cmp\_legacy svm extapic cr8\_legacy 3dnowprefetch lbrv 
 bogomips : 4620.79 
 TLB size : 1024 4K pages 
 clflush size : 64 
 cache\_alignment : 64 
 address sizes : 40 bits physical, 48 bits virtual 
 power management: ts fid vid ttp tm stc 100mhzsteps 

 processor : 1 
 vendor\_id : AuthenticAMD 
 cpu family : 15 
 model : 107 
 model name : AMD Athlon(tm) X2 Dual Core Processor BE-2400 
 stepping : 2 
 cpu MHz : 2300.000 
 cache size : 512 KB 
 physical id : 0 
 siblings : 2 
 core id : 1 
 cpu cores : 2 
 apicid : 1 
 initial apicid : 1 
 fpu : yes 
 fpu\_exception : yes 
 cpuid level : 1 
 wp : yes 
 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr\_opt rdtscp lm 3dnowext 3dnow rep\_good nopl extd\_apicid pni cx16 lahf\_lm cmp\_legacy svm extapic cr8\_legacy 3dnowprefetch lbrv 
 bogomips : 4620.79 
 TLB size : 1024 4K pages 
 clflush size : 64 
 cache\_alignment : 64 
 address sizes : 40 bits physical, 48 bits virtual 
 power management: ts fid vid ttp tm stc 100mhzsteps 

Thanks.


#2

Hi Jawaad,

Thanks for posting! By far the biggest factor for Fedora graphics performance is GNOME 3. It’s pretty terrible for anything other than PCIe attached graphics.

Have you had a chance to try turning it off by going back to fallback mode?
http://plugable.com/2012/06/11/fedora…

And, moving forward, MATE-based spins are probably the answer.

Let us know how things have shifted with that change. Thanks!
Bernie


#3

I tried it out. The fallback mode definitely helped; my normal terminal typing and Firefox browsing felt more natural than before.

There was no change to my VLC playback, and I’ve been having trouble with my Flash installation so I couldn’t exercise Youtube.

As it stands, I’m afraid I’m going to have to return the UD-160-M since it won’t fit my personal needs. As stated before, I’m not thrilled about the idea that a CPU spike when someone visits the wrong Web page could result in another’s PVR playback to become choppy.

This doesn’t mean it’s not a good product; I think the UD-160-M is wonderful on Fedora; it just won’t work for me. Please do let me know if you decide to build a model with dedicated graphics.

Thanks!


#4

Hi Jawaad,

Understood, thanks for writing up these experiences! They’re helpful to others to understand the pros and cons. The more a scenario is focused on apps and web, the better the fit – the more on motion video or 3D gaming, the less the fit.

We try to make returns (within 30 days) painless, in case the product isn’t a fit, just visit http://amazon/returns.

Thanks again!
Bernie


#5