Same problem here. Some notes about what happen. Sorry for not providing complete logs. This is my notes which is not very readable, not even for me.. :)
The machine has been continuously updated since 13.10. Updated from 14.04 to 15.04 by going through 14.10. All done yesterday. Problem detected when arriving at 15.04. Usually either a 1: ... rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 0. 2: ... rt2x00mmio_regbusy_read() Indirect register access failed: offset=0x0000308c, value=0x00010400 this is followed by: ieee80211 phy0: wlan0: No probe response from AP .... after 500ms, disconnecting 3: ... rt2x00queue_flush_queue: Warning - Queue 0 failed to flush After turning on nohwcrypt error 1 went away, and was replaced by 2 and 3. With nohwcrypt turned off I got 2 and then 3, leading to a time out. 1 alone gives failing network 2 and 3, or 3 alone, later gives ... authenticate with ... ... direct probe to ... (try 1/3) ... direct probe to ... (try 2/3) ... direct probe to ... (try 3/3) ... authentication with ... timed out and then network fails $ lspci | fgrep 'Ralink' 03:07.0 Network controller: Ralink corp. RT2561/RT61 802.11.g PCI Some additional info Chipset detected - rt: 2661, rf: 0003, rev: 000b Selected rate control algorithm 'minstrel_ht' Firmware .. 0.8 It ia an AMD triple core proc $ uname -a Linux hydra 3.19.0-17-generic #17-Ubuntu SMP Wed May 6 16:46:12 UTC 2015 x86-64 x86_64 x86_64 GNU/Linux Just to verify that the module is in fact the latest one. I've compiled them at one point so just to make sure they are provided by the distro. $ cat /sys/module/rt2x00*/version 2.3.0 (reported three times) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1393744 Title: 1814:0301 RT2x00/rt61pci disconnects since update to 15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1393744/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
