I'm on Ubuntu 20.10, on Dell XPS 13 9370, with a Qualcomm Atheros QCA6174 wifi card, using the ath10k driver. This laptop, with this configuration, is known to be well supported under Linux/Ubuntu (Dell even sells this machine with Ubuntu preinstalled).
In Ubuntu, it takes +/- 10 seconds after resume from suspend to connect to the wifi (not a big deal, but annoying since many apps wake up complaining about lack of network connection).
In Windows 10, on the same machine, the reconnection after suspend is instant.
I've tried various settings to improve wifi reconnection speed, with limited results. For reference, here's what I've tried:
Disabling wifi power management: Disable wifi power management
Replacing wpa_supplicant with iwd: https://discourse.ubuntu.com/t/call-for-testing-improved-wifi-via-iwd/17795
I'm just curious to know if there's a possible tweak that I'm missing (in network manager, systemd, some suspend script or?) to speed this up.
Any idea someone?
02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)with Ubuntu versionNAME="Ubuntu" VERSION="21.04 (Hirsute Hippo)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 21.04" VERSION_ID="21.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=hirsute UBUNTU_CODENAME=hirsute– Snowcrash Jan 15 '22 at 14:03