[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
This seems to be fixed now. I am running with n mode and power saving with no problems as of latest 14.04, more specifically: jschopp@p55t:~$ uname -a Linux p55t 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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
[Kernel-packages] [Bug 1262388] Re: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes
This seems to be fixed now. I am running with n mode and power saving with no problems as of 14.04, more specifically: jschopp@p55t:~$ uname -a Linux p55t 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ** Changed in: linux (Ubuntu) Status: Triaged = Fix Released -- 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/1262388 Title: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes Status in “linux” package in Ubuntu: Fix Released Bug description: My wifi connection is rather unstable in Saucy and Trusty using the default firmware and kernel. Once the abort occurs, wifi becomes very unstable, crashing every 5 mins. I've also tested kernel version 3.11.8, using Firmware iwlwifi-7260-7-ucode (ie. version 7) for the 7260 controller. So far, the following commit has helped in dealing with this issue: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-trusty.git;a=commitdiff;h=6960a059b2c618f32fe549f13287b3d2278c09e9 Looking at dmesg, the failure appears to originate as: [ 398.780636] ieee80211 phy0: Hardware restart was requested [ 398.781020] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.781158] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.789161] iwlwifi :02:00.0: Microcode SW error detected. Restarting 0x200. Then, after some register values (I can post these if you want), I get: [ 398.789618] iwlwifi :02:00.0: Firmware error during reconfiguration! Abort. [ 398.789622] iwlwifi :02:00.0: FW error in SYNC CMD MAC_CONTEXT_CMD Finally, I get the same warning in util.c: [ 398.789949] WARNING: CPU: 2 PID: 1474 at /home/apw/COD/linux/net/mac80211/util.c:1509 ieee80211_reconfig+0x15d9/0x1860 [mac80211]() Edit: I have since upgraded to kernel 3.13, and although the crash still occurs, iwlwifi tries to restart itself. I can see the wifi icon disconnect and then reconnect automatically a few seconds later. This trace is from syslog: Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310204] ieee80211 phy0: Hardware restart was requested Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310566] iwlwifi :02:00.0: L1 Disabled; Enabling L0S Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310720] iwlwifi :02:00.0: L1 Disabled; Enabling L0S Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319280] iwlwifi :02:00.0: Microcode SW error detected. Restarting 0x200. .. .. Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319749] iwlwifi :02:00.0: Firmware error during reconfiguration - reprobe! .. Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319778] Workqueue: events ieee80211_restart_work [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319781] 88019450b218 8800d9313a98 81757304 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319786] 880194508000 8800d9313b28 a02cd100 880196b6c000 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319790] 0019 0015d912 0019 8800 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319794] Call Trace: Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319801] [81757304] dump_stack+0x46/0x58 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319813] [a02cd100] iwl_pcie_send_hcmd_sync+0x580/0x590 [iwlwifi] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319819] [810ad760] ? __wake_up_sync+0x20/0x20 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319828] [a02ce53a] iwl_trans_pcie_send_hcmd+0x2a/0x80 [iwlwifi] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319836] [a0585d3e] iwl_mvm_send_cmd+0x2e/0xa0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319841] [a0585ded] iwl_mvm_send_cmd_pdu+0x3d/0x40 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319847] [a0583ff3] iwl_mvm_mac_ctxt_send_cmd+0x33/0x70 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319853] [a0584e00] iwl_mvm_mac_ctxt_cmd_station+0xe0/0x140 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319858] [a0585526] iwl_mvm_mac_ctx_send+0x56/0xa0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319863] [a058597e] iwl_mvm_mac_ctxt_add+0x2e/0xc0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319868] [a058134a] iwl_mvm_mac_add_interface+0xfa/0x2d0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319872] [81611787] ? led_trigger_event+0x47/0x60 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319891] [a04de924] ieee80211_reconfig+0x5e4/0x1840 [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319903] [a04b9f48] ? ieee80211_scan_cancel+0xb8/0x1b0 [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319913] [a04b11d7] ieee80211_restart_work+0x87/0xb0 [mac80211]
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
Also worth noting this related bug with the same wifi adapter: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961 -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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
[Kernel-packages] [Bug 1262388] Re: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes
Managed to get the wifi stable by disabling n and power savings. sudo vi /etc/modprobe.d/iwlwifi-disable11n.conf Add this line: options iwlwifi 11n_disable=1 powertop to set Wireless Power Saving for interface wlan0 off uname -a Linux p55t 3.13.0-20-generic #42-Ubuntu SMP Fri Mar 28 09:56:33 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Some info from lspci (after the above config changes): 02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73) Subsystem: Intel Corporation Wireless-N 7260 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast TAbort- TAbort- MAbort- SERR- PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 59 Region 0: Memory at f7d0 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: fee0800c Data: 41b1 Capabilities: [40] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s 512ns, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s 4us, L1 32us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE# DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Device Serial Number fc-f8-ae-ff-ff-58-32-b1 Capabilities: [14c v1] Latency Tolerance Reporting Max snoop latency: 3145728ns Max no snoop latency: 3145728ns Capabilities: [154 v1] Vendor Specific Information: ID=cafe Rev=1 Len=014 ? Kernel driver in use: iwlwifi -- 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/1262388 Title: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes Status in “linux” package in Ubuntu: Triaged Bug description: My wifi connection is rather unstable in Saucy and Trusty using the default firmware and kernel. Once the abort occurs, wifi becomes very unstable, crashing every 5 mins. I've also tested kernel version 3.11.8, using Firmware iwlwifi-7260-7-ucode (ie. version 7) for the 7260 controller. So far, the following commit has helped in dealing with this issue: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-trusty.git;a=commitdiff;h=6960a059b2c618f32fe549f13287b3d2278c09e9 Looking at dmesg, the failure appears to originate as: [ 398.780636] ieee80211 phy0: Hardware restart was requested [ 398.781020] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.781158] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.789161] iwlwifi :02:00.0: Microcode SW error detected. Restarting 0x200. Then, after some register values (I can post these if you want), I
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
Managed to get the wifi stable by disabling n and power savings. sudo vi /etc/modprobe.d/iwlwifi-disable11n.conf Add this line: options iwlwifi 11n_disable=1 powertop to set Wireless Power Saving for interface wlan0 off uname -a Linux p55t 3.13.0-20-generic #42-Ubuntu SMP Fri Mar 28 09:56:33 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Some info from lspci (after the above config changes): 02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73) Subsystem: Intel Corporation Wireless-N 7260 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast TAbort- TAbort- MAbort- SERR- PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 59 Region 0: Memory at f7d0 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: fee0800c Data: 41b1 Capabilities: [40] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s 512ns, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s 4us, L1 32us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE# DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Device Serial Number fc-f8-ae-ff-ff-58-32-b1 Capabilities: [14c v1] Latency Tolerance Reporting Max snoop latency: 3145728ns Max no snoop latency: 3145728ns Capabilities: [154 v1] Vendor Specific Information: ID=cafe Rev=1 Len=014 ? Kernel driver in use: iwlwifi -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff
[Kernel-packages] [Bug 1262388] Re: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes
Also worth noting this related bug with the same wifi adapter: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961 -- 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/1262388 Title: 8086:08b1 [Toshiba Satellite P55-A5312] Intel 7260 Wifi regularly crashes Status in “linux” package in Ubuntu: Triaged Bug description: My wifi connection is rather unstable in Saucy and Trusty using the default firmware and kernel. Once the abort occurs, wifi becomes very unstable, crashing every 5 mins. I've also tested kernel version 3.11.8, using Firmware iwlwifi-7260-7-ucode (ie. version 7) for the 7260 controller. So far, the following commit has helped in dealing with this issue: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-trusty.git;a=commitdiff;h=6960a059b2c618f32fe549f13287b3d2278c09e9 Looking at dmesg, the failure appears to originate as: [ 398.780636] ieee80211 phy0: Hardware restart was requested [ 398.781020] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.781158] iwlwifi :02:00.0: L1 Disabled; Enabling L0S [ 398.789161] iwlwifi :02:00.0: Microcode SW error detected. Restarting 0x200. Then, after some register values (I can post these if you want), I get: [ 398.789618] iwlwifi :02:00.0: Firmware error during reconfiguration! Abort. [ 398.789622] iwlwifi :02:00.0: FW error in SYNC CMD MAC_CONTEXT_CMD Finally, I get the same warning in util.c: [ 398.789949] WARNING: CPU: 2 PID: 1474 at /home/apw/COD/linux/net/mac80211/util.c:1509 ieee80211_reconfig+0x15d9/0x1860 [mac80211]() Edit: I have since upgraded to kernel 3.13, and although the crash still occurs, iwlwifi tries to restart itself. I can see the wifi icon disconnect and then reconnect automatically a few seconds later. This trace is from syslog: Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310204] ieee80211 phy0: Hardware restart was requested Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310566] iwlwifi :02:00.0: L1 Disabled; Enabling L0S Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.310720] iwlwifi :02:00.0: L1 Disabled; Enabling L0S Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319280] iwlwifi :02:00.0: Microcode SW error detected. Restarting 0x200. .. .. Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319749] iwlwifi :02:00.0: Firmware error during reconfiguration - reprobe! .. Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319778] Workqueue: events ieee80211_restart_work [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319781] 88019450b218 8800d9313a98 81757304 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319786] 880194508000 8800d9313b28 a02cd100 880196b6c000 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319790] 0019 0015d912 0019 8800 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319794] Call Trace: Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319801] [81757304] dump_stack+0x46/0x58 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319813] [a02cd100] iwl_pcie_send_hcmd_sync+0x580/0x590 [iwlwifi] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319819] [810ad760] ? __wake_up_sync+0x20/0x20 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319828] [a02ce53a] iwl_trans_pcie_send_hcmd+0x2a/0x80 [iwlwifi] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319836] [a0585d3e] iwl_mvm_send_cmd+0x2e/0xa0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319841] [a0585ded] iwl_mvm_send_cmd_pdu+0x3d/0x40 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319847] [a0583ff3] iwl_mvm_mac_ctxt_send_cmd+0x33/0x70 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319853] [a0584e00] iwl_mvm_mac_ctxt_cmd_station+0xe0/0x140 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319858] [a0585526] iwl_mvm_mac_ctx_send+0x56/0xa0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319863] [a058597e] iwl_mvm_mac_ctxt_add+0x2e/0xc0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319868] [a058134a] iwl_mvm_mac_add_interface+0xfa/0x2d0 [iwlmvm] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319872] [81611787] ? led_trigger_event+0x47/0x60 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319891] [a04de924] ieee80211_reconfig+0x5e4/0x1840 [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319903] [a04b9f48] ? ieee80211_scan_cancel+0xb8/0x1b0 [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319913] [a04b11d7] ieee80211_restart_work+0x87/0xb0 [mac80211] Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319917] [810843cf] process_one_work+0x17f/0x4c0 Dec 18 16:27:58 RoganJosh-JME kernel: [ 407.319920] [810855fb]
