I'm now on the 4.11.0-10-generic kernel, and have not seen this failure again. However, I'll leave it up to the kernel team to see if they want to pursue this further. You can install this kernel on Xenial by installing linux-generic-hwe-16.04-edge.
More information is available https://wiki.ubuntu.com/Kernel/LTSEnablementStack If you have enough time to do a git bisect so we can pull the commit back into official kernels that would be really helpful. Thanks, Dave On Fri, Aug 4, 2017 at 1:04 AM, Alfred <1702...@bugs.launchpad.net> wrote: > Today, I replace my old 7260 dual band(engineer sample) with a new 7260 > dual band. > > 04:00.0 Network controller [0280]: Intel Corporation Wireless 7260 > [8086:08b2] (rev 83) > > The network is becoming more instable. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1702961 > > Title: > Intel wifi instability with 4.10 and Intel Device 24fd > > Status in linux-hwe package in Ubuntu: > Confirmed > > Bug description: > Wifi drops and has to reconnect regularly. > > This is on a Dell Precision 5520. > > Kernel warnings in log include. > > ------------[ cut here ]------------ > WARNING: CPU: 4 PID: 1042 at /build/linux-hwe-dbNd9L/linux- > hwe-4.10.0/drivers/net/wireless/intel/iwlwifi/mvm/sta.c:1523 > iwl_mvm_rm_sta+0x3ea/0x460 [iwlmvm] > Modules linked in: ccm rfcomm bbswitch(OE) bnep snd_hda_codec_hdmi > dell_led snd_hda_codec_realtek snd_hda_codec_generic hid_multitouch joydev > i2c_designware_platform i2c_designware_core dell_wmi mxm_wmi nls_iso8859_1 > dell_rbtn dell_laptop dell_smbios dcdbas dell_smm_hwmon intel_rapl > x86_pkg_temp_thermal intel_powerclamp coretemp arc4 kvm_intel kvm irqbypass > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc iwlmvm aesni_intel > mac80211 aes_x86_64 crypto_simd glue_helper cryptd iwlwifi cfg80211 > rtsx_pci_ms memstick snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep > snd_pcm input_leds snd_seq_midi serio_raw snd_seq_midi_event snd_rawmidi > snd_seq snd_seq_device snd_timer snd soundcore uvcvideo videobuf2_vmalloc > videobuf2_memops idma64 videobuf2_v4l2 virt_dma videobuf2_core videodev > media > btusb btrtl mei_me shpchp mei processor_thermal_device intel_lpss_pci > intel_soc_dts_iosf intel_pch_thermal hci_uart btbcm btqca btintel bluetooth > dell_smo8800 wmi intel_hid intel_lpss_acpi nvidia_uvm(POE) sparse_keymap > mac_hid intel_lpss tpm_crb int3400_thermal int3403_thermal acpi_als > int340x_thermal_zone acpi_thermal_rel kfifo_buf acpi_pad industrialio > parport_pc ppdev lp parport autofs4 i915 rtsx_pci_sdmmc nvidia_drm(POE) > nvidia_modeset(POE) nvidia(POE) i2c_algo_bit drm_kms_helper syscopyarea > sysfillrect sysimgblt fb_sys_fops psmouse drm nvme ahci rtsx_pci nvme_core > libahci i2c_hid hid pinctrl_sunrisepoint video pinctrl_intel fjes > CPU: 4 PID: 1042 Comm: wpa_supplicant Tainted: P OE > 4.10.0-27-generic #30~16.04.2-Ubuntu > Hardware name: Dell Inc. Precision 5520/0R6JFH, BIOS 1.3.4 06/08/2017 > Call Trace: > dump_stack+0x63/0x90 > __warn+0xcb/0xf0 > warn_slowpath_null+0x1d/0x20 > iwl_mvm_rm_sta+0x3ea/0x460 [iwlmvm] > iwl_mvm_mac_sta_state+0x40a/0x600 [iwlmvm] > drv_sta_state+0x8a/0x460 [mac80211] > __sta_info_destroy_part2+0x17a/0x1b0 [mac80211] > __sta_info_flush+0x103/0x1b0 [mac80211] > ieee80211_set_disassoc+0xba/0x3f0 [mac80211] > ieee80211_mgd_auth+0x26c/0x3c0 [mac80211] > ? cfg80211_get_bss+0x1c5/0x2d0 [cfg80211] > ieee80211_auth+0x18/0x20 [mac80211] > cfg80211_mlme_auth+0x101/0x210 [cfg80211] > nl80211_authenticate+0x30b/0x370 [cfg80211] > genl_family_rcv_msg+0x1db/0x3b0 > genl_rcv_msg+0x59/0xa0 > ? genl_notify+0x80/0x80 > netlink_rcv_skb+0xa4/0xc0 > genl_rcv+0x28/0x40 > netlink_unicast+0x18c/0x240 > netlink_sendmsg+0x2fb/0x3a0 > ? aa_sock_msg_perm+0x61/0x150 > sock_sendmsg+0x38/0x50 > ___sys_sendmsg+0x2c2/0x2d0 > ? destroy_inode+0x3b/0x60 > ? evict+0x136/0x1a0 > ? iput+0x1bb/0x240 > ? __dentry_kill+0x110/0x160 > ? dput+0x214/0x250 > ? mntput+0x24/0x40 > ? __fput+0x190/0x220 > __sys_sendmsg+0x54/0x90 > SyS_sendmsg+0x12/0x20 > entry_SYSCALL_64_fastpath+0x1e/0xad > RIP: 0033:0x7f6d6dd04450 > RSP: 002b:00007ffcd1f168b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f6d6dd04450 > RDX: 0000000000000000 RSI: 00007ffcd1f16940 RDI: 0000000000000007 > RBP: 0000562488dd1adc R08: 0000000000000000 R09: 00000000000000df > R10: 0000000000001000 R11: 0000000000000246 R12: 0000562488dd1adc > R13: 0000562488dd4550 R14: 0000000000000000 R15: 0000000000000000 > ---[ end trace 24fe098f56796fbc ]--- > > ProblemType: Bug > DistroRelease: Ubuntu 16.04 > Package: linux-image-4.10.0-27-generic 4.10.0-27.30~16.04.2 [modified: > boot/vmlinuz-4.10.0-27-generic] > ProcVersionSignature: Ubuntu 4.10.0-27.30~16.04.2-generic 4.10.17 > Uname: Linux 4.10.0-27-generic x86_64 > ApportVersion: 2.20.1-0ubuntu2.9 > Architecture: amd64 > CurrentDesktop: Unity > Date: Fri Jul 7 11:25:55 2017 > InstallationDate: Installed on 2017-07-06 (0 days ago) > InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Beta amd64 > (20170706) > SourcePackage: linux-hwe > UpgradeStatus: No upgrade log present (probably fresh install) > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/ > 1702961/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1702961 Title: Intel wifi instability with 4.10 and Intel Device 24fd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1702961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
