Raspberry Pi Forums

andrum99

have you got your IQaudio DAC work properly in Raspbian Buster? Yes - absolutely no problem getting it working for me - just inserted the relevant dtoverlay line in config.txt as with previous models of Pi. (I'm using a slightly older version of the Pi-DAC+ with a blank EEPROM - newer versions use ...

andrum99

I'm getting the following messages in the log with the 64-bit kernel: Sep 10 04:53:25 livingroom kernel: [42196.434063] perf: interrupt took too long (2521 > 2500), lowering kernel.perf_event_max_sample_rate to 79250 Sep 10 06:20:46 livingroom kernel: [47437.778387] perf: interrupt took too long (31...

andrum99

I'm seeing the SoC idle 1 or 2 degrees C lower with the v2 USB controller firmware versus the original release version. Everything else looks normal so far.

andrum99

Think I'm getting mixed up with the VLI chip's firmware update which I seem to remember reading can lower the SoC temperature slightly. Beta main EEPROM firmware is installed now and I can't detect any difference in the SoC temperature. I will try the v2 VLI update next.

andrum99

Not yet, it will be when the Debian package is updated but not until next week. Feel free to apt update apt install rpi-eeprom then use "rpi-eeprom-update -f" to install the beta. The changelog is just the SDRAM changes. No new features Thanks - I've installed it now so will see what happens. Hopef...

andrum99

I see there is a beta firmware in the rpi-eeprom repo on github with the above date. Is there a public changelog for this one we can have a look at?

andrum99

jamesh wrote: ↑
Fri Sep 06, 2019 12:26 pm

Gavinmc42 wrote: ↑
Fri Sep 06, 2019 12:07 pm
I keep forgetting you guys still do 32bit versions
Not funny.

Seconded. 32-bit has served Raspberry Pi rather well up to this point - don't knock it.

andrum99

It looks like your Intrusion Prevention System was the cause of the slow downs - is that right? If so, glad you got it sorted

andrum99

That's true, but booting the device opens up a whole different can of worms, since absolutely everything is coming over the wifi. WPA is "broken" now, and most WPA2 can be cracked reasonably easily as well. I'd hardly call WPA2 easily cracked. Yes it has known vulnerabilities now that make it easie...

andrum99

Per https://askubuntu.com/questions/254826/how-to-force-a-clock-update-using-ntp you can use the 'sntp' command as follows: sudo sntp -s <ntp server address> Where <ntp server address> is the IP address of your local NTP server, e.g. 192.168.1.250 (No < and > required). To run this once at startup o...

andrum99

There is a bug in the Buster version of wpa_supplicant that stops it connecting to eduroam. You need to downgrade to the Stretch version - see here: https://www.raspberrypi.org/forums/view ... 1#p1498661

andrum99

If the Apple keyboard is presenting sometimes as a USB mass storage device that would be enough to confuse the boot ROM in the Pi. I suspect either the boot ROM was getting stuck somewhere, or because of a subtle change in timing, your USB drive was not making itself ready in time for the Pi to read...

andrum99

Since Raspbian is being converted to 64-bit (woohoo!!) does that mean Raspbian Desktop for PCs will become 64-bit as well? I have had trouble getting it to run in a virtual machine using VMware Workstation Player because (if I remember right) the 32-bit binaries confused the VM since the underlying...

andrum99

What are you using to play the video? What resolution is your display? Most software has not yet been optimized for the Pi 4. Hi, thanks for the answer, I'm using chromium to get to youtube, my monitor is 1920x1080! And I've also tested a 1080p 60fps video sample and I opened it with VLC and the vi...

andrum99

Thanks everyone. I'll be using around 20-24 AWG wire that'll only be 10-30cm long. So it should be more than enough. I just wanted to make sure there weren't any electrical advantages to the USB-C port. Compared to the micro-B connector, the type C connector can handle slightly more current, which ...

andrum99

Thanks everyone. I'll be using around 20-24 AWG wire that'll only be 10-30cm long. So it should be more than enough. I just wanted to make sure there weren't any electrical advantages to the USB-C port. For reference, the official Raspberry Pi micro-B power supply outputs 5.1V and has a 1.5 metre 1...

andrum99

With a wired connection you need physical access to the network to get in. With wifi you just need to sniff some packets and crack the password. Which is not specific to booting. If you're using WiFi you've already accepted this risk. Thus booting over WiFi is no more of a risk than doing anything ...

andrum99

What are you using to play the video? What resolution is your display? Most software has not yet been optimized for the Pi 4.

andrum99

Well, the story told by Marcel Holtmann, iwd developer from Intel, is that wpa_supplicant is massively complicated, poorly maintained, is not really intended for the purpose for which it is used, and does not actually do what we want when it comes to managing wifi connectivity in our Linux desktops...

andrum99

I would caution that, from a security perspective, booting over wifi is a really bad idea. Care to elaborate? I would think that booting over an encryted WiFI (WPA) network via a know AP would be no less secure than booting over a wired network. With the possible exception of a spoofed AP/SSID but ...

andrum99

I would caution that, from a security perspective, booting over wifi is a really bad idea.

andrum99

Why is it so difficult to do it on arm? From what I can gather, because ARM is targeted at the embedded market, anything that is not needed is left out of the processor core. So when the ARM cores are added to a chip, they don't have temperature sensors in them - you need to add your own hardware b...

andrum99

Perhaps a compromise might be to include an obvious break location on the PCB with a couple of exposed pads either side, where someone could cut the track, then if they wanted to re-enable flashing place a link across the pads. Adding actual jumpers would add additional cost. If there was a way to a...

andrum99

ejolson wrote: ↑
Tue Sep 03, 2019 9:02 pm
Even high-end motherboards for Intel compatible processors don't have a jumper to disable reflashing the BIOS.

Agreed - adding a jumper is probably not necessary. Also, if Raspberry Pi thought it was necessary they would have added it to the board already.

andrum99

disable FKMS in config.txt by commenting out "dtoverlay=vc4-fkms-v3d". The Mesa drivers for V3D will NOT run on Stretch Are you sure? I've been using that config setting since Raspbian Jessie for one specific program that will not run without it. Been working (mostly) fine since 2016 There's a dist...

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