I’ve upgraded (all) my systems from 25.04 to 25.10 and the overall processes went smoothly.
I did so on both a tower and a laptop.
The reason of this call for help however comes from my laptop: it seems that my WLAN adapter speeds go from Hero to zero within RANDOM.
The symptoms are:
Laptop system boots;
Internet/WLAN activates;
Browsing/downloading works;
Starting a download (on a large file) goes very fast(as fast as it was/should) and then dies.
#4 can be explained as if you start downloading some DVD ISO and, eventually, it will go from 20+Mbits down to a few KB/s. This can happen 10 seconds after the download began or 2 minutes. The solution is to cancel and try again.
The reason this is only located on my laptop is because doing the same operation via my tower works 100% of the time, without any problem.
One final thing is that this WLAN speed going to crap situation happens regardless of when using HTTPS or via SCP…
Assuming that both your tower and laptop are using the same WLAN ...
It is possible that your laptop has some self-preservation logic to slow down the internet transfer it the CPU is getting too hot from the wireless communication.
If, on the other hand, your tower is wired and your laptop is wireless ...
I don't have the tools to perform that kind of analysis, but it sounds like the wireless towers (assuming that is not your tower computer's internet modem) doing traffic shaping, downgrading the priority for your download's stream, reducing the allocated bandwidth.
The other possibility is that the seeds/peers for the DVD ISO that you are downloading (assuming via torrent application) are perceiving a different "quality" of interraction and downgrading your connection priority and reducing their allocated bandwidth to your laptop. If this is possible, ensure that both your tower and laptop settings for your torrent tool are identical.
Merci Éric pour ta réponse, par contre comme je disais je n’ai que ce problème avec mon WLAN: c’est comme si je passais d’une connection 10/100/1000 vers simplement du 10.
Je te confirme aussi que rien de tout ça n’a rapport avec les torrents.
If you can plug a wire a connection from your laptop to your cable modem/router(wireless?) for the sam LAN as your tower, is the cable-based transfer from tower to your laptop experiencing the same problem speed issue, or is it able to maintain the full interface bandwidth?
Did you have full bandwidth available before the upgrade?
If so, then maybe the Power Management logic has been changed, where reaching a temperature threshold causes the CPU clock to drop, as a "smart" hardware protection mechanism, instead of simply doing a high-temp power shutdown.
Other than that, like Thom said, it could be a change in the drivers which is impacting firmware, assuming you haven't done any firmware upgrades.
Absolutely: booting using the previous kernel ended up bringing speeds back to normal.
So the conclusion here would be that 1. I need to reinstall firmware for WLAN and 2. 25.10 upgrade did not kept those system preferences in place(and should they? I think so)?