Author: dkeone
Subject: Fatal1ty Z170 Gaming-ITX/ac No display after sleep
Posted: 14 Apr 2016 at 2:21pm
Thank you for a good response on the subject, here's my thoughts.
The TV itself i have used previously with a Intel NUC i7 and i ran 4k @60hz with sleep on that device and the tv never had any issues detecting when the nuc woke up after a day of sleeping so the TV seems fine.
The Intel NUC also uses the intel built in driver (but not skylake) so i would guess it would handle those events similar to how the asrock built in intel graphics does, no? Well it does work on the nuc, it doesn't on the asrock motherboard so i'm automatically thinking asrock is to blame but it might also be the skylake intel drivers) but since i never experienced any difference running all the intel updates yet when changing bios i experienced huge difference i could only conclude that the gfx was working and asrock bios was broken.
I will do more tests in the weekend, it's very time consuming to test as explained above when the TV & HTPC sleeps for more then an hour wake up signal is not being detected, doing trial and error on this obviously takes a lot of time.
Subject: Fatal1ty Z170 Gaming-ITX/ac No display after sleep
Posted: 14 Apr 2016 at 2:21pm
 parsec wrote:
The same team that is writing the VBIOS (familiar with that?) and graphics drivers for the 530 graphics... Intel. If you believe ASRock or Asus has anything to do with the Intel integrated graphics beyond including the latest Intel VBIOS updates in their board's UEFI/BIOS updates, and supplying an Intel graphics driver for download, then you are mistaken. So your problem with waking from Sleep and apparently losing the video output sync to the TV, which includes Windows (implementing Sleep), Intel's video drivers and VBIOS for their integrated graphics, and your 4K TV (not a PC monitor, with a new technology (4K), driven by a PC, rather than a cable TV signal or TV - type optical disk player, neither of which ever stop sending a signal to the TV except when shutoff, and have no Sleep mode), can only be blamed by you on the ASRock mother board, resulting in you saying your experience with it is garbage.  Which 20 Asus mother boards that provide a 4K video output, that you've used with your 4K TV, don't have the wake from Sleep issue? If you've followed the Intel video driver updates for their latest graphics, ranging from 510 to 580, there have been many updates and, unusual for Intel, Beta video driver releases. If you check the release notes of the latest Beta release (3/11/2016), in the Known Issues section, one of the many unresolved issues is loss of playback when resuming from S3 or S4 (Sleep and Hibernate). https://downloadmirror.intel.com/25848/eng/ReleaseNotes_GFX_15%2040%204404.pdf New drivers or VBIOS versions are not always improvements in every way, things can break that were previously working. I also wonder how it is possible for a 4K TV to be signaled to re-sync the video signal once it is lost (Sleep) if the TV itself is not capable of detecting the loss of signal lock and trying to establish it again itself, without being power cycled. That is very basic digital signaling, which PC monitors deal with, but TVs are not built to the same standards as PC monitors. This reminds me of the Windows problem with no signal from the video card to a PC monitor upon wake from Sleep on my (sorry) Asus P67 board. Windows expected the video driver to react in a certain amount of time, and if it failed to do so, that was an error and it gave up. |
Thank you for a good response on the subject, here's my thoughts.
The TV itself i have used previously with a Intel NUC i7 and i ran 4k @60hz with sleep on that device and the tv never had any issues detecting when the nuc woke up after a day of sleeping so the TV seems fine.
The Intel NUC also uses the intel built in driver (but not skylake) so i would guess it would handle those events similar to how the asrock built in intel graphics does, no? Well it does work on the nuc, it doesn't on the asrock motherboard so i'm automatically thinking asrock is to blame but it might also be the skylake intel drivers) but since i never experienced any difference running all the intel updates yet when changing bios i experienced huge difference i could only conclude that the gfx was working and asrock bios was broken.
I will do more tests in the weekend, it's very time consuming to test as explained above when the TV & HTPC sleeps for more then an hour wake up signal is not being detected, doing trial and error on this obviously takes a lot of time.