Open lance6716 opened 9 years ago
does this still happen?
version 5.5.5 cm12.1 20150730. not sure. might happens if there is no background IM apps(QQ or Wechat for me Chinese user), i'll check it asap.
exist.
Happened again when there is a background IM app. Perhaps my WiFi is poor.
Can confirm, happens to me as well. Possible workaround (by Frankenstu): http://forum.cyanogenmod.org/topic/107023-cm12121-wifi-connectivity-issuesdrops-workaround-included/#entry523766.
Go to Settings / Wi-Fi / Advanced
Go to "Keep Wi-Fi on during sleep"
Select "Never"
Now Go back in and re-select "Always"
@M1cha I get the following errors in dmesg:
<4>[39941.591033] Suspending console(s) (use no_console_suspend to debug)
<6>[39941.599700] msm_fb_ext_suspend: Turning off HPD circuitry
<3>[39941.613311] wlan: [21668:E :HDD] hdd_is_apps_power_collapse_allowed: do not allow APPS power collapse-pmcState = 6 scanRspPending = 0 inMiddleOfRoaming = 1
<3>[39941.613341] wlan: [21668:E :HDD] wlan_suspend: Fail wlan suspend: not in IMPS/BMPS
<3>[39941.613372] wlan: [21668:F :HDD] hddDevSuspendHdlr: Not able to suspend wlan
<3>[39941.613402] dpm_run_callback(): platform_pm_suspend+0x0/0x54 returns -1
<3>[39941.613433] PM: Device wcnss_wlan.0 failed to suspend: error -1
<3>[39941.613463] PM: Some devices failed to suspend
Not sure if these errors are related to this problem. I do notice a bigger battery drain when the display is turned off compared to Kitkat. Could this be caused by the wlan failing to suspend?
Someone have the problem too according to xiaomi.eu forum. http://xiaomi.eu/community/threads/discussion-cm12-for-aries-by-m1cha.26162/page-30
I've noticed when I unlocked the photo WiFi will reconnect, and the battery usage shows WLAN turned off at about 15 min after the screen-off