I recently purchased an HP Notebook 17-y020ca and installed XUbuntu 16.04. This notebook has a Broadcom Corporation BCM43142 wireless card.
This wireless card was not originally detected, and I followed the instructions at the following to install support using the bcmwl-kernel-source:
http://ift.tt/2aHZem1
After some futzing (resolved at http://ift.tt/2aVh0Fx) the WiFi has been able to regularly detect networks and connect at least transiently. By performing a ping, I was able to get beyond some earlier issues, apparently caused by the network card entering power saving mode.
However, I am encountering severe problems with the network disconnecting periodically on my home and certain other WiFi networks. These disconnections occur every 4-6 minutes or so -- Given that this is a laptop which registers decent signal strength when connected, the problem seems to occur in close proximity to routers, and I therefore doubt any signal-strength issues. I am also experiencing irregular ping timings to my local router (going from low milliseconds to hundreds times that). I am not yet certain if the problem occurs uniformly across all networks, but the problem certainly appears to occur in most networks.
Because of this problem, my laptop is only barely in a working state on WiFi -- it is hard to get work done or use the web in a reliable manner.
Running the standard ubuntu forums wireless-info scripts gives the following:
Attachment 270581
Looking at logs via journalctl -f seems to suggests that the problem is related to a kernel fault in wl_event_handle (see stack trace below).
Code:
Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: ------------[ cut here ]------------ Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: WARNING: CPU: 2 PID: 677 at /home/kernel/COD/linux/net/w ireless/sme.c:850 cfg80211_roamed+0x86/0xa0 [cfg80211]() Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: Modules linked in: uas usb_storage cmac rfcomm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep nls_iso8859_1 wl(POE) uvcvideo videobuf2_vmallo c videobuf2_memops videobuf2_v4l2 videobuf2_core kvm_amd kvm videodev btusb snd_hda_codec_realtek btrtl ir qbypass media btbcm btintel snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_c ore bluetooth crct10dif_pclmul snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event crc32_pclmul snd_rawmidi snd_seq hp_wmi snd_seq_device sparse_keymap ghash_clmulni_intel aesni_intel snd_timer snd aes_x86_64 lrw e dac_mce_amd soundcore cfg80211 gf128mul glue_helper ablk_helper cryptd edac_core joydev input_leds k10temp fam15h_power serio_raw shpchp i2c_piix4 hp_wireless tpm_crb i2c_designware_platform i2c_designware_core Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: mac_hid 8250_dw parport_pc ppdev lp parport autofs4 amd kfd amd_iommu_v2 amdgpu i2c_algo_bit ttm psmouse drm_kms_helper syscopyarea sysfillrect sdhci_pci sysimgbl t fb_sys_fops sdhci ahci libahci drm r8169 mii wmi fjes video Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: CPU: 2 PID: 677 Comm: wl_event_handle Tainted: P W OE 4.5.7-040507-generic #201606100436 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: Hardware name: HP HP Notebook/8221, BIOS F.05 05/05/2016 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: 0000000000000286 0000000079d4cdf0 ffff8800dd8a7dc8 ffff ffff813e1173 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: 0000000000000000 ffffffffc03640e0 ffff8800dd8a7e00 ffff ffff81080ff2 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: ffff8801f11d7000 ffff88009f413e40 00000000000000a3 ffff 88009f413d80 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: Call Trace: Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff813e1173>] dump_stack+0x63/0x90 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff81080ff2>] warn_slowpath_common+0x82/0xc0 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff8108113a>] warn_slowpath_null+0x1a/0x20 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffffc033f966>] cfg80211_roamed+0x86/0xa0 [cfg8021 1] Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffffc0838965>] wl_notify_roaming_status+0xc5/0x14 0 [wl] Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffffc0837fb0>] wl_event_handler+0x60/0x1e0 [wl] Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffffc0837f50>] ? wl_notify_scan_status+0x320/0x32 0 [wl] Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff810a06a8>] kthread+0xd8/0xf0 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff810a05d0>] ? kthread_create_on_node+0x1a0/0x1 a0 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff81825bcf>] ret_from_fork+0x3f/0x70 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: [<ffffffff810a05d0>] ? kthread_create_on_node+0x1a0/0x1 a0 Aug 04 20:37:39 ndo885-HP-Notebook-6-2016 kernel: ---[ end trace c4267130c856d7a7 ]--- Aug 04 20:37:40 ndo885-HP-Notebook-6-2016 dhclient[12383]: DHCPDISCOVER on eno1:avahi to 255.255.255.255 p ort 67 interval 10 (xid=0x6cdae14e) Aug 04 20:37:40 ndo885-HP-Notebook-6-2016 dhclient[11017]: DHCPDISCOVER on eno1:avahi to 255.255.255.255 p ort 67 interval 8 (xid=0x98c7e761) Aug 04 20:37:40 ndo885-HP-Notebook-6-2016 dhclient[22642]: DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 3 (xid=0x10ef8076) Aug 04 20:37:40 ndo885-HP-Notebook-6-2016 dhclient[17647]: DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 11 (xid=0xfbc60b) Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 dhclient[18737]: DHCPDISCOVER on eno1:avahi to 255.255.255.255 p ort 67 interval 16 (xid=0xe81fff0e) Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 dhclient[27033]: DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 17 (xid=0xdec5e41f) Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 dhclient[776]: DHCPDISCOVER on eno1 to 255.255.255.255 port 67 i nterval 8 (xid=0x609b6905) Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 wpa_supplicant[1859]: wlo1: CTRL-EVENT-SSID-REENABLED id=0 ssid= "SASKTEL3453" Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 wpa_supplicant[1859]: wlo1: Trying to associate with 20:76:00:1a :6e:28 (SSID='SASKTEL3453' freq=2442 MHz) Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <info> [1470364661.7964] device (wlo1): s upplicant interface state: scanning -> associating Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 wpa_supplicant[1859]: wlo1: Associated with 20:76:00:1a:6e:28 Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <info> [1470364661.8252] device (wlo1): s upplicant interface state: associating -> associated Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <info> [1470364661.8349] device (wlo1): s upplicant interface state: associated -> 4-way handshake Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 wpa_supplicant[1859]: wlo1: CTRL-EVENT-REGDOM-CHANGE init=COUNTR Y_IE type=COUNTRY alpha2=CA Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <warn> [1470364661.8792] device (wlo1): l ink timed out. Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <info> [1470364661.8793] device (wlo1): s tate change: activated -> failed (reason 'supplicant-timeout') [100 120 11] Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 NetworkManager[7570]: <info> [1470364661.8799] manager: Network Manager state is now CONNECTED_LOCAL Aug 04 20:37:41 ndo885-HP-Notebook-6-2016 whoopsie[837]: [20:37:41] offline
This is a major practical problem -- I would be deeply grateful for anyone who can help!
Sincerely,
Nathaniel Osgood
Frequent spontaneously disconnects on broadcom WiFi in Ubuntu 16.04
Aucun commentaire:
Enregistrer un commentaire