Hello, after restarting rasperry 3B ,I started having extreme dropouts with integrated wifi after violent power off and power off. Previous startup was 600days ago, with kernel 4.19. now it shows kernel 5.10, both 32bit.
*sometimes it is working at almost full speed (30Mbps real of 72Mbps theoretical)- always when i start process tcpdump -n - i wlan0 (even with &>/dev/null), but last only for few minutes,
*extremely high percentage of TX frames failed (20%-50%)
*connectedy solely by wpa_supplicant to WPA2 802.11n network, signal is -60dB, fine, powermgmt off, txpower 15dB manually tuned before, tried higher,
*I have second usb wifi card running hostapd, channel numbers difference is 8, and level is -40dB
*no same-channel wifi nearby ( other nets weaker -90dB), except one (-44dB at eight channel numbers off) createdy by hotspot
*tried more power sources, (DC, wall), + connectors :GPIO + microUSB
* absolutely no messages in dmesg, journalctl and wpa_supplicant (not tried -d(ebug))
*rebooting, and event poweroff+startup does not solve problem
what kind of problem this can be (interference, kernel bug, screwed up firmware, power saving)? how to solve it?
*sometimes it is working at almost full speed (30Mbps real of 72Mbps theoretical)- always when i start process tcpdump -n - i wlan0 (even with &>/dev/null), but last only for few minutes,
*extremely high percentage of TX frames failed (20%-50%)
*connectedy solely by wpa_supplicant to WPA2 802.11n network, signal is -60dB, fine, powermgmt off, txpower 15dB manually tuned before, tried higher,
*I have second usb wifi card running hostapd, channel numbers difference is 8, and level is -40dB
*no same-channel wifi nearby ( other nets weaker -90dB), except one (-44dB at eight channel numbers off) createdy by hotspot
*tried more power sources, (DC, wall), + connectors :GPIO + microUSB
* absolutely no messages in dmesg, journalctl and wpa_supplicant (not tried -d(ebug))
*rebooting, and event poweroff+startup does not solve problem
what kind of problem this can be (interference, kernel bug, screwed up firmware, power saving)? how to solve it?
Code:
sudo rpi-update *** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom *** Performing self-update *** Relaunching after update *** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom *** Invalid hash givenStatistics: Posted by odroid — Thu Feb 20, 2025 6:43 pm