5 ms·

> And I learnt that even when it is not used (not sure it the lid was closed) a macbook can cause significant interference to the wifi for all other nearby devi

by tomxor 4y ago

> And I learnt that even when it is not used (not sure it the lid was closed) a macbook can cause significant interference to the wifi for all other nearby devices. My partner has an older MBP, I noticed this the last time she was forced to updated her OS a major version... the thing no longer sleeps when you tell it to or when you close the lid, it will stay connected to wifi and quite happily saturate the network downloading updates. Only way to be sure is to power off the stupid thing.

astrange 4y ago
https://support.apple.com/guide/mac-help/turn-power-nap-on-or-off-mh40774/mac https://support.apple.com/guide/mac-help/turn-power-nap-on-o...
- tomxor 4y ago
  Tried it, didn't work, I also dug out the old pmset command but it seems to have been neutered. I'm glad I stopped using Apple stuff 10 years ago, their macs are gradually devolving into iDevices.
  - astrange 4y ago
    Sleep isn’t any different than it used to be. “pmset -g assertions” will show you why it thinks it’s awake, it could be a silent video playing in a web browser or something. (and of course, if you can ssh in to run that it must be awake.)
    - IAmEveryone 4y ago
      they already mentioned why it was awake: downloading updates. ...which it only does when connected to power so I'm honestly failing to understand what the problem may be. Anyway: Settings -> Software updates -> Advanced -> Download new updates when available -> uncheck. For everything else: Battery -> Power adaptor -> Wake for network access -> uncheck (may also take care of the above, dunno)
code_duck 4y ago
My understanding is this is an issue with new features of all sorts of laptop/desktop devices. For example, https://news.ycombinator.com/item?id=28639952 https://news.ycombinator.com/item?id=28639952 "Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag" because they stay connected to wifi and may attempt to run updates etc when the user is not expecting or prepared for that, as far as cooling.
- tomxor 4y ago
  I own an XPS, it runs Debian, it only installs updates when I tell it to. Even if I decided to use the untended upgrades package, it wouldn't do it when I sleep the computer... that would just be stupid.
  - alimov 4y ago
    Yeah it might be unwanted behavior for your particular setup. Personally, on macOS and windows, I would prefer not to be at the computer when an update occurs - I also dont want to have to go do something else while I wait for the update. Just feels like a waste of time in my opinion. However, if I had reason to care about an update or the changes it was introducing I too would not want background updates running when I put my machine to sleep. I guess for an average user updating when the machine is not in use is a feature, while for the tech crowd that kind of behavior can mess with your preferred setup.
    - tharkun__ 4y ago
      I always assumed it was smart enough though not to do it when it's on battery as it is very likely that the device is also in a confined space, such as a laptop backpack waiting for the trip to the office next morning. If I have it sitting on power and thus likely just on the top of the table and I have auto-updates on, sure do them when I'm not around as long as they are updates that can run unattended. Note the "if auto-updates are on" part, which luckily you can still disable on MacOS.
      - 4y ago
Abishek_Muthian 4y ago
Yesterday my home DNS weren't resolving and noticed on PiHole that there were >30,000 requests of *.in-addr.arpa (Reverse DNS Lookup) from the iPhone+iPad of the guest to whom I gave the WiFi access and was saturating the Pi's CPU. I re-enabled rate limiting on PiHole and blocked the request with a filter. A cursory search on the issue says Bonjour is the culprit, I'm forwarding DNS requests to my PiHole instances on my gateway and latest iOS doesn't seem to like it; I haven't faced such issue earlier and I have this setup for several years now.
chris37879 4y ago
For extra fun, if while it's sleeping it's connected to a Display Port or USB-C display, it'll wake it up everytime it wakes the wifi for its 'power naps'. Disabling them in System Prefs doesn't change this.

by tomxor 4y ago

astrange 4y ago

https://support.apple.com/guide/mac-help/turn-power-nap-on-or-off-mh40774/mac https://support.apple.com/guide/mac-help/turn-power-nap-on-o...

tomxor 4y ago
Tried it, didn't work, I also dug out the old pmset command but it seems to have been neutered. I'm glad I stopped using Apple stuff 10 years ago, their macs are gradually devolving into iDevices.
- astrange 4y ago
  Sleep isn’t any different than it used to be. “pmset -g assertions” will show you why it thinks it’s awake, it could be a silent video playing in a web browser or something. (and of course, if you can ssh in to run that it must be awake.)
  - IAmEveryone 4y ago
    they already mentioned why it was awake: downloading updates. ...which it only does when connected to power so I'm honestly failing to understand what the problem may be. Anyway: Settings -> Software updates -> Advanced -> Download new updates when available -> uncheck. For everything else: Battery -> Power adaptor -> Wake for network access -> uncheck (may also take care of the above, dunno)

code_duck 4y ago

My understanding is this is an issue with new features of all sorts of laptop/desktop devices. For example, https://news.ycombinator.com/item?id=28639952 https://news.ycombinator.com/item?id=28639952 "Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag" because they stay connected to wifi and may attempt to run updates etc when the user is not expecting or prepared for that, as far as cooling.

tomxor 4y ago
I own an XPS, it runs Debian, it only installs updates when I tell it to. Even if I decided to use the untended upgrades package, it wouldn't do it when I sleep the computer... that would just be stupid.
- alimov 4y ago
  Yeah it might be unwanted behavior for your particular setup. Personally, on macOS and windows, I would prefer not to be at the computer when an update occurs - I also dont want to have to go do something else while I wait for the update. Just feels like a waste of time in my opinion. However, if I had reason to care about an update or the changes it was introducing I too would not want background updates running when I put my machine to sleep. I guess for an average user updating when the machine is not in use is a feature, while for the tech crowd that kind of behavior can mess with your preferred setup.
  - tharkun__ 4y ago
    I always assumed it was smart enough though not to do it when it's on battery as it is very likely that the device is also in a confined space, such as a laptop backpack waiting for the trip to the office next morning. If I have it sitting on power and thus likely just on the top of the table and I have auto-updates on, sure do them when I'm not around as long as they are updates that can run unattended. Note the "if auto-updates are on" part, which luckily you can still disable on MacOS.
    - 4y ago

Abishek_Muthian 4y ago

Yesterday my home DNS weren't resolving and noticed on PiHole that there were >30,000 requests of *.in-addr.arpa (Reverse DNS Lookup) from the iPhone+iPad of the guest to whom I gave the WiFi access and was saturating the Pi's CPU. I re-enabled rate limiting on PiHole and blocked the request with a filter. A cursory search on the issue says Bonjour is the culprit, I'm forwarding DNS requests to my PiHole instances on my gateway and latest iOS doesn't seem to like it; I haven't faced such issue earlier and I have this setup for several years now.

chris37879 4y ago

For extra fun, if while it's sleeping it's connected to a Display Port or USB-C display, it'll wake it up everytime it wakes the wifi for its 'power naps'. Disabling them in System Prefs doesn't change this.