On 12/02/2012 03:02 AM, Allan Gottlieb wrote: > On Sat, Dec 01 2012, Florian Philipp wrote: > >> Am 28.07.2012 10:22, schrieb Florian Philipp: >>> Am 27.07.2012 22:57, schrieb Michael Mol: >>>> On Fri, Jul 27, 2012 at 4:39 PM, Florian Philipp >>>> wrote: >>>>> Am 27.07.2012 22:22, schrieb Michael Mol: >>>>>> On Fri, Jul 27, 2012 at 4:10 PM, Allan Gottlieb wrote: >>>>>>> I am getting a new laptop. (likely dell 6430). >>>>>>> The two graphics options are intel HD 4000 and nvidia NVS 5200M. >>>>>>> Dell is as expected suggesting the 5200M. >>>>>>> >>>>>>> I do not need 3D or fast response. Dell hinted that DVDs might not play >>>>>>> with the intel HD 4000. This seems weird to me as the 4000 is supposed >>>>>>> to be a big improvement over the 3000 and I can't believe dell or others >>>>>>> would have sold laptops that can't play dvds >>>>>>> >>>>>>> Any comments or experiences? >>>>>> My Duron 750MHz was able to decode DVDs in realtime. After that, all >>>>>> you're doing is blitting (or using xv) the frames to the screen. I >>>>>> would be absolutely shocked if the Intel HD 4000 GPU couldn't handle >>>>>> that basic of a 2D acceleration function. >>>>>> >>>>>> Now, DVDs use MPEG2. Blu-Ray uses h.264, which is a much harder beast >>>>>> to decode in realtime. It's possible the HD 4000 GPU can't handle >>>>>> hardware decode of h.264, but I don't know. I've never looked into it. >>>>>> (Software decode of 1080p h.264 on my Phenom 9650 worked somewhat, but >>>>>> highly active scenes would cause frame drops.) >>>>>> >>>>> I've experienced issues playing DVDs on fullscreen with the OSS radeon >>>>> driver. Therefore I'm cautious of assumptions that something works >>>>> simply because the input is easy to decode. Upscaling to large displays >>>>> with high resolutions can be an issue. >>>>> >>>>> I'm not saying the Intel driver cannot handle it. I'm just saying you >>>>> should try it or look for reports. >>>> How high is 'high' resolution? I was upscaling to 1600x1200 using an a >>>> Radeon 9600; that card would now be almost ten years old. A bit later, >>>> I did the same on a 2.4GHz Pentium 4 using an i845-based Intel >>>> graphics card. Here's the line from lspci, as run in May of 2007: >>>> >>>> 00:02.0 VGA compatible controller: Intel Corporation >>>> 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) >>>> >>>> Hardware scaling a 2D image is one of the most trivial >>>> hardware-accelerated options GPUs perform. If someone had difficulties >>>> upscaling a 480p (roughly what DVDs are) to 1080p at 24 or 33fps, I >>>> would be very highly suspicious of a software misconfiguration. That >>>> kind of scaling should even be comfortably doable in software on any >>>> modern x86-derived processor. (With the plausible exclusion of the >>>> Atom CPU) >>>> >>> 1920x1080, on-board Radeon HD 4250. I haven't diagnosed it further >>> (except of playing around with mplayer2 options) as it was easier to use >>> the closed source driver. >>> >>> Regards, >>> Florian Philipp >> >> I realize this thread is pretty stale but since I talked bullshit and >> just now realized it, I want to correct myself: >> >> Since updating the kernel to 3.5 forced me to update the X server beyond >> 1.11 which in turn forced me to update ati-drivers to a version that no >> longer supported my Radeon HD 4250, I had to look into my issues with >> the open source driver. >> >> It turns out, my problems had two reasons: >> - I didn't enable KMS and DRM for radeon in the kernel >> - I didn't have x11-drivers/radeon-ucode installed >> >> Both resulted in a fully functioning X server that >> - could run glxgears just fine >> - could (with some tuning) render videos in DVD quality with opengl output >> - was too slow for videos in any higher resolution >> >> Regards, >> Florian Philipp > Thanks for the response. I should say that I have indeed purchased the > laptop with intel graphics and it works fine with DVDs. > > allan > > My laptop HP g4-1057tu of HD 3000 GPU can handle hardware decode of 720P easily with vaapi-mplayerˇ«ˇ«ˇ«ˇ«