Good news regarding tearing and low EmulationStation performance on Pi 4
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@Rascas Is it possible to install Kodi 19 on the Pi4?
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@PhoenixJedi It is possible to compile it yourself and install it yes. But there is still some problems and nothing really new or different so in my opininnion it isn't really worth to mess with it. Python 3 only is something pulling it back in my opinion. Until there is proper HDR and HD audio bitstreaming support, I don't really see a need to go into it.
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@Rascas Dang, cause thats the only thing keeping me from going to the 5.4 KMS driver.
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@Rascas So i have no idea how to get/compile kodi 19 for the pi4... im guessing theres no way youd be willing to walk me through it?
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This is getting of topic... but if you don't have an idea about it, don't bother with it, it is not something easy to do. If you want more information open a new topic or search Kodi forums, there is some information about it there already.
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@saccublenda Hi I just wanted to find out hat theme is this that you are using. I like it
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@Jimi007 It's the Snes mini theme
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@cellux said in Good news regarding tearing and low EmulationStation performance on Pi 4:
I got a nice tip though. It is possible to use the old sound driver:
dtparam=audio=on
dtoverlay=vc4-kms-v3d-pi4,audio=off
(and the old vc4-hdmi.conf)Dit you get this to work? i cannot get audio (also not with this tip)
I only see the BCM2835 headphones driver, but i need either the 2835 HDMI 1 driver to work or the new kms audio driver. Can't get both to work...
I tried
- dtoverlay=vc4-kms-v3d-pi4,audio=off (with dtparam=audio=on and old vc4-hdmi.conf)
- and dtoverlay=vc4-kms-v3d-pi4 with new vc4-hdmi.conf
on both no audio. Does anyone have a tip?
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I'm in the same situation. I can get the KMS driver to work but cannot get audio.
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Kernel 5.4 is still in testing and KMS isn't ready yet so issues may occur. For more information about it's current state check this thread:
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=269769 -
@akamming said in Good news regarding tearing and low EmulationStation performance on Pi 4:
@cellux said in Good news regarding tearing and low EmulationStation performance on Pi 4:
I got a nice tip though. It is possible to use the old sound driver:
dtparam=audio=on
dtoverlay=vc4-kms-v3d-pi4,audio=off
(and the old vc4-hdmi.conf)Dit you get this to work? i cannot get audio (also not with this tip)
I only see the BCM2835 headphones driver, but i need either the 2835 HDMI 1 driver to work or the new kms audio driver. Can't get both to work...
I tried
- dtoverlay=vc4-kms-v3d-pi4,audio=off (with dtparam=audio=on and old vc4-hdmi.conf)
- and dtoverlay=vc4-kms-v3d-pi4 with new vc4-hdmi.conf
on both no audio. Does anyone have a tip?
It is not possible to use the BCM2835 and the vc4hdmi drivers at the same time.
What is your output when you type in aplay -l in the cmd line? -
So I did a normal
apt updatetoday and apparently we're officially on 5.4 now? Using the KMS driver and new audio driver and everything seems to be working as intended, save for a "failed to find mixer elements" error with ES that's probably related to the new audio driver, but that's not much of a problem.EDIT: Hm, maybe it's not working quite as intended after all. I'm getting audio dropouts on more demanding stuff (Dreamcast with Redream, some games that require MAME 2016) using the new audio driver). Think I'll go back to FKMS/old audio driver until the new stuff has been tested a bit more.
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@SeraphisCain said in Good news regarding tearing and low EmulationStation performance on Pi 4:
So I did a normal
apt updatetoday and apparently we're officially on 5.4 now? Using the KMS driver and new audio driver and everything seems to be working as intended, save for a "failed to find mixer elements" error with ES that's probably related to the new audio driver, but that's not much of a problem.EDIT: Hm, maybe it's not working quite as intended after all. I'm getting audio dropouts on more demanding stuff (Dreamcast with Redream, some games that require MAME 2016) using the new audio driver). Think I'll go back to FKMS/old audio driver until the new stuff has been tested a bit more.
I just confirmed this as well about the kernel update.
So in order to use the vc4hdmi audio driver, you need to disable the broadcom2835 one in your config.txt
Using both is not possible, or at least that is what was mentioned before. It was said that both drivers are fighting for the same resources hence why one of them needs to be disabled.
The vc4hdmi audio driver is a WIP, so results will vary.
Also, for the vc4hdmi driver you need to use an updated vc4hdmi.conf in the /usr/share/alsa/cards folder:
I am surprised that this file was not replaced with the new one with the kernel update.
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For the moment I'm using
dtoverlay=vc4-kms-v3d,noaudioalong with dtparam=audio=on to use the new video driver along with the old audio driver until things get ironed out with the new HDMI audio driver. -
@SeraphisCain said in Good news regarding tearing and low EmulationStation performance on Pi 4:
For the moment I'm using
dtoverlay=vc4-kms-v3d,noaudioalong with dtparam=audio=on to use the new video driver along with the old audio driver until things get ironed out with the new HDMI audio driver.The correct usage is dtoverlay=vc4-kms-v3d,noaudio=on
You can verify by typing aplay -l in the cmdline and the vc4hdmi devices will not be present.
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According to this:
https://github.com/raspberrypi/linux/pull/3640#issuecomment-639053905
noaudioandnoaudio=onshould have the same effect, since "on" is assumed if no parameter is given. -
@SeraphisCain said in Good news regarding tearing and low EmulationStation performance on Pi 4:
issuecomment
Good catch. I haven’t used the driver in awhile. For me the lack of a mixer doesn’t make it a suitable driver.
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Yep, looks like they officially released 5.4 and the gamecon driver still doesn't work. I have no idea what the problem is but I did post the problem to them months ago in their forum and got ignored.
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@Darksavior said in Good news regarding tearing and low EmulationStation performance on Pi 4:
I have no idea what the problem is but I did post the problem to them months ago in their forum and got ignored.
Well, it's not their driver - why would you expect them to fix it ?
You should have reported this upstream - https://github.com/marqs85/gamecon_gpio_rpi. -
@mitu Well, I don't know of these things. A simple "not our problem" would've done it.
Buzz always tells people to post problems on the forum first, so I'm always hesitant to post problems at the github.
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