I am trying to connect ad business. I now know that there are some Cisco Access Points. I tried it at home yesterday and the error is not present there. Well, sometimes it takes some time to start to occur, but then it occurs regularly.
After extensive tests with different kernels I am more and more convinced that kernel is not to blame. It has happened much more often with some kernels, so I concluded that kernel is the reason. As I am looking into WIFI driver source some things are strange to me there. I didn't have time to experiment with the driver yet and I will ASAP. I will definitely explore drivers's power management and why driver is repeatedly going into adapter power off and then power on. Unfortunately the driver is poor with comments and I can only guess what developers were thinking, but going into power off only because power state was checked four times does not seem logical. Until I investigate and try to fix the driver, do with this bug report whatever you have to do. I am sorry for possible false alarm. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1453028 Title: Kernel drops connection with rtl8192cu fixed driver Status in linux package in Ubuntu: Incomplete Bug description: I have experienced a strange error a month ago when Ubuntu 14.10 upgraded the linux kernel. rtl8192cu fixed driver stopped working. The error is mentioned here: http://askubuntu.com/questions/546195/ubuntu-14-10-rtl8192cu- bug/609057#609057 The kernel 3.16.0-33-generic (maybe also some older) had this error and an update from 3.16.0-33-generic to 3.16.0-34-generic fixed the issue. Identical issue popped up again with a kernel update in Ubuntu 15.04 from 3.19.0-15 to 3.19.0-16. Obviously the patches applied in 3.16.0-34-generic shall be applied to 3.19.0-16-generic again. The following lines appear in the syslog all the time and the wireless connection is not working: May 8 08:01:20 computer NetworkManager[969]: <info> (wlan4): supplicant interface state: associating -> disconnected May 8 08:01:20 computer NetworkManager[969]: <info> (wlan4): supplicant interface state: disconnected -> scanning May 8 08:01:21 computer kernel: [70436.589191] survey done event(1c) band:0 for wlan4 May 8 08:01:24 computer kernel: [70439.508489] ==>rtw_ps_processor .fw_state(8) May 8 08:01:24 computer kernel: [70439.508494] ==>ips_enter cnts:952 May 8 08:01:24 computer kernel: [70439.508496] ===> rtw_ips_pwr_down................... May 8 08:01:24 computer kernel: [70439.508959] ====> rtw_ips_dev_unload... May 8 08:01:24 computer kernel: [70439.532197] usb_read_port_cancel May 8 08:01:24 computer kernel: [70439.532398] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:24 computer kernel: [70439.532669] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:24 computer kernel: [70439.532898] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:24 computer kernel: [70439.533149] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:24 computer kernel: [70439.533207] usb_write_port_cancel May 8 08:01:24 computer kernel: [70439.533222] ==> rtl8192cu_hal_deinit May 8 08:01:24 computer kernel: [70439.533224] bkeepfwalive(0) May 8 08:01:24 computer kernel: [70439.533225] card disble without HWSM........... May 8 08:01:24 computer kernel: [70439.538277] <=== rtw_ips_pwr_down..................... in 28ms May 8 08:01:26 computer kernel: [70441.592759] _rtw_pwr_wakeup call ips_leave.... May 8 08:01:26 computer kernel: [70441.592765] ==>ips_leave cnts:952 May 8 08:01:26 computer kernel: [70441.592766] ===> rtw_ips_pwr_up.............. May 8 08:01:26 computer kernel: [70441.592770] ===> ips_netdrv_open......... May 8 08:01:26 computer kernel: [70441.597595] ===> FirmwareDownload91C() fw:Rtl819XFwImageArray_TSMC May 8 08:01:26 computer kernel: [70441.597599] FirmwareDownload92C accquire FW from embedded image May 8 08:01:26 computer kernel: [70441.597602] fw_ver=v88, fw_subver=2, sig=0x88c0 May 8 08:01:26 computer kernel: [70441.622978] fw download ok! May 8 08:01:26 computer kernel: [70441.622981] Set RF Chip ID to RF_6052 and RF type to 2. May 8 08:01:27 computer kernel: [70442.002524] IQK:Start!!! May 8 08:01:27 computer kernel: [70442.014279] Path A IQK Success!! May 8 08:01:27 computer kernel: [70442.019030] Path B IQK Success!! May 8 08:01:27 computer kernel: [70442.027535] Path A IQK Success!! May 8 08:01:27 computer kernel: [70442.032330] Path B IQK Success!! May 8 08:01:27 computer kernel: [70442.044917] Path A IQK Success!! May 8 08:01:27 computer kernel: [70442.049671] Path B IQK Success!! May 8 08:01:27 computer kernel: [70442.054424] IQK: final_candidate is 1 May 8 08:01:27 computer kernel: [70442.054428] IQK: RegE94=100 RegE9C=3f9 RegEA4=fc RegEAC=3ff RegEB4=101 RegEBC=8 RegEC4=fe RegECC=1 May 8 08:01:27 computer kernel: [70442.054428] Path A IQ Calibration Success ! May 8 08:01:27 computer kernel: [70442.056546] Path B IQ Calibration Success ! May 8 08:01:27 computer kernel: [70442.169850] pdmpriv->TxPowerTrackControl = 1 May 8 08:01:27 computer kernel: [70442.174477] rtl8192cu_hal_init in 584ms May 8 08:01:27 computer kernel: [70442.187114] <=== rtw_ips_pwr_up.............. in 596ms May 8 08:01:27 computer kernel: [70442.187233] ==> ips_leave.....LED(0x00028080)... May 8 08:01:28 computer kernel: [70443.496206] survey done event(1e) band:0 for wlan4 May 8 08:01:29 computer kernel: [70444.190567] ==>rtw_ps_processor .fw_state(8) May 8 08:01:29 computer kernel: [70444.190572] ==>ips_enter cnts:953 May 8 08:01:29 computer kernel: [70444.190574] ===> rtw_ips_pwr_down................... May 8 08:01:29 computer kernel: [70444.190825] ====> rtw_ips_dev_unload... May 8 08:01:29 computer kernel: [70444.214200] usb_read_port_cancel May 8 08:01:29 computer kernel: [70444.214400] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:29 computer kernel: [70444.214650] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:29 computer kernel: [70444.214901] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:29 computer kernel: [70444.215150] usb_read_port_complete()-1284: RX Warning! bDriverStopped(0) OR bSurpriseRemoved(0) bReadPortCancel(1) May 8 08:01:29 computer kernel: [70444.215194] usb_write_port_cancel --- ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: markoh 2199 F.... pulseaudio /dev/snd/controlC0: markoh 2199 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 15.04 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=b3f4c3e3-52b4-4b7a-bb72-2f1d04fbbcca InstallationDate: Installed on 2013-04-12 (755 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MachineType: Hewlett-Packard HP Compaq 8200 Elite SFF PC Package: linux (not installed) ProcFB: 0 nouveaufb 1 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic root=UUID=94938447-8a12-42d6-8ba3-9ba5b20d585d ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 RelatedPackageVersions: linux-restricted-modules-3.19.0-16-generic N/A linux-backports-modules-3.19.0-16-generic N/A linux-firmware 1.143 RfKill: Tags: vivid Uname: Linux 3.19.0-16-generic x86_64 UpgradeStatus: Upgraded to vivid on 2015-04-17 (21 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers wireshark _MarkForUpload: True dmi.bios.date: 11/10/2011 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: J01 v02.15 dmi.board.asset.tag: CZC204270Y dmi.board.name: 1495 dmi.board.vendor: Hewlett-Packard dmi.chassis.asset.tag: CZC204270Y dmi.chassis.type: 6 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrJ01v02.15:bd11/10/2011:svnHewlett-Packard:pnHPCompaq8200EliteSFFPC:pvr:rvnHewlett-Packard:rn1495:rvr:cvnHewlett-Packard:ct6:cvr: dmi.product.name: HP Compaq 8200 Elite SFF PC dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1453028/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
