lemp9: Left side of system heats up when AC adapter is plugged in

system76 / ec

System76 Open Source Embedded Controller

GNU General Public License v3.0

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lemp9: Left side of system heats up when AC adapter is plugged in #42

Open brs17 opened 4 years ago

brs17 commented 4 years ago

The A/C barrel plug adapter for the lemp9 is on the left side of the system. When the adapter is plugged in the left side of the system gets warm, if not hot, to the touch.

At first I just thought it was the NVMe drive installed on the left side of the system, but then realized that the left third of the chassis as a whole gets warm.

jackpot51 commented 4 years ago

Solved by https://github.com/system76/ec/commit/ed0e662d60dfb19951cca8384326eca5fc117fbc

Charging current was halved. System charges at 30W instead of the previous 60W and should not heat up as much while charging.

blakeridgway commented 4 years ago

I have been noticing a similar issue, this issue was brought to my attention.

When the battery gets to about 80% charge the chassis gets noticeably warm with the barrel connector plugged in. According to the Vitals Temperature monitor my Lemur Pro starts sitting around 66C, and once the barrel connector is unplugged it will instantly drop down 10C.

OS: 契cat /etc/os-release NAME="Pop!_OS" VERSION="20.04 LTS" ID=pop ID_LIKE="ubuntu debian" PRETTY_NAME="Pop!_OS 20.04 LTS" VERSION_ID="20.04" HOME_URL="https://system76.com/pop" SUPPORT_URL="http://support.system76.com" BUG_REPORT_URL="https://github.com/pop-os/pop/issues" PRIVACY_POLICY_URL="https://system76.com/privacy" VERSION_CODENAME=focal UBUNTU_CODENAME=focal LOGO=distributor-logo-pop-os

Firmware: System76 Lemur Pro (lemp9) 2020-05-15_e2baafa.

priyasiddharth commented 4 years ago

I still see this issue with fw 2020_08_6_2e5f452

cat /etc/os-release
NAME="Pop!_OS"
VERSION="20.04 LTS"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 20.04 LTS"
VERSION_ID="20.04"
HOME_URL="https://pop.system76.com"
SUPPORT_URL="https://support.system76.com"
BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
PRIVACY_POLICY_URL="https://system76.com/privacy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
LOGO=distributor-logo-pop-os

Following https://github.com/system76/ec/issues/42#issuecomment-609114940, can the charging power be reduced further e.g. 20W? Is there a limit to which it can be reduced?