JVC 52G786 HD-ILA Rear Projection (2004-2005 model) http://support.jvc.com/consumer/prod...lId=MODL027579
Originally Posted by Stobber
Anybody had glitching or video tearing when using the HDMI input with a PC? I just bought a Lenovo X220 (stock i7-2620M graphics) with a DP++ output. Got myself a 28AWG DP-to-HDMI cable and hooked it up to my girlfriend's Vizio VX32L set: 1280x720 resolution displays perfectly with a little bit of horizontal overscan. Audio comes through clearly, too. But when I hook it up to my 52G786, the image tears frequently. The audio also skips or cuts every time the video glitch happens. In both cases, the video driver recognizes the set's model number and provides a recommended resolution. Any idea why this is happening on my JVC or what I can do to address/debug it?
with 2011 Lenovo X220 Laptop? (stock i7-2620M graphics) with a DP++ output.
On a 61 (2005/2006 model..(can't remember the model number-sorry) I used to have that had HDMI (v1.3) IIRc worked fine via various pc's for the most part.
That HDCP el-crap-ola embedded into the HDMI datastream is most likely the cause/contributing factor. (Thanks Hollywood).
(Both devices must handshake and maintain handshake properly. HDMI is like two people talking in a room face to face- HDCP is like adding in several people talking to you and the other person-at the same time- in several different languages to boot with you and the other person trying to maintain the conversation. Me thinks HDMI over the years would have tons less "problems", devices could talk with each other if Hollywood hadn't gotten their way.)
I would assume you have tried powering on set first /and or pc first, maybe done a reset of setting to default etc.
And maybe you have totally removed power (unplug) set and let it sit... for a 1/2hr or more.
Lenovo X220 (stock i7-2620M graphics) with a DP++ output.
Image tearing frequently, with audio skipping at same time I would think indicates a problem on the PC side. With that said- 52G786 HDMI board (v1.3 HDMI?) might just not like the 2620M graphic chipset. (V2.xx HDMI?)
Unless someone else has some better options:
Run taskmanager, etc to see if there is something eating up cpu/gpu cycles- spike corresponding to glitch? Yes I know a long-shot.
Disable all unneeded programs running in background.
Play around with various settings /resolutions
52G786, HDMI/video processing board
-just doesn't like the 2620M
-has bad /weak capacitors....
Does the glitching occur COLD/HOT?
Cabling= "New" Lenovo X220 (stock i7-2620M graphics) with a DP++ output. etc.... "New" components cannot be relied upon until run at least 30-days... try another cable, try another PC.....
(Most laptops these days have a HDMI port- ask around and see if a friend has a unit you can borrow. If another PC works- you work problem from there.)
PS: Don't know if it will help, but somewhere in this thread should be instructions I posted many years ago on doing a HDMI RESET... Don't know if your unit is v1.3HDMI, but on early units (HDMI 1.3) was flaky... Symptom IIRC, Green/blank screens mostly / devices that would not play nice together.
Oh.... When you do get the units playing nice together, post in detail "The fix".