From: Mark Herbert <mark.herbert42@gmail.com>
To: ath11k@lists.infradead.org
Subject: High battery usage with ath11k on Dell 9310
Date: Sun, 10 Oct 2021 15:24:13 +0300 [thread overview]
Message-ID: <c2c790a6-b86a-6664-e147-bc642e00e325@gmail.com> (raw)
Simply disabling wifi drops 0.8-1 watts from power consumption.
Comparing almost same model (16 gb RAM vs 32) but based on Intel card
shows the same difference - Intel based laptop with WiFi connected
consumes about same as ath11k with Wifi discnnected.
Powertop newer shows PC states below PC6. Disabling WiFi allows PC8,
disabling ath11k completely (bios) - PC10.
Wifi enabled
Pkg(HW)
C2 (pc2) 18,5% |
C3 (pc3) 14,2% |
C6 (pc6) 47,5% |
C7 (pc7) 0,0% |
C8 (pc8) 0,0% |
C9 (pc9) 0,0% |
C10 (pc10) 0,0% |
Wfi disabled (by networkmanager/nm-applet)
Pkg(HW)
C2 (pc2) 10,8% |
C3 (pc3) 18,5% |
C6 (pc6) 1,1% |
C7 (pc7) 0,3% |
C8 (pc8) 28,3% |
C9 (pc9) 0,0% |
C10 (pc10) 0,0% |
Seems that even on no network activity ath11k forces CPU to stay awake
and eat battery. There are some background transfer happening as I have
Viber, thunderbird and firefox opened so I bet they do sent some but
there is no file transfers, media streams etc. Under the same conditions
(taking this disk from one 9310 to other 9310 - same software, same
kernel - just wifi's different) - iwlwifi manages to reach PC8-PC10
being connected. With ath10k on dell XPS-13 9350 intel also was saving
battery much better than ath10k, bit there was like 88% of PC10 with
intel and 65% PC10 and 20% PC8 with ath10k. But it was not such terribly
bad as with ath11.
There is already kernel bug for this, not creating duplicates
https://bugzilla.kernel.org/show_bug.cgi?id=214543
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next reply other threads:[~2021-10-10 12:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-10 12:24 Mark Herbert [this message]
2021-10-11 5:41 ` High battery usage with ath11k on Dell 9310 Kalle Valo
2021-10-13 16:37 ` Mark Herbert
2021-10-20 8:16 ` Kalle Valo
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