HP Stream 11 with Ubuntu 15.04 64bit. Wifi works for a short while after a restart, but eventually stops working:
[ 1808.529062] Corrupted low memory at ffff8800000013d0 (13d0 phys) = 1317000000000000 [ 1808.529084] Corrupted low memory at ffff8800000013d8 (13d8 phys) = 00000703 [ 1808.529153] ------------[ cut here ]------------ [ 1808.529184] WARNING: CPU: 0 PID: 2767 at /build/buildd/linux-3.19.0/arch/x86/kernel/check.c:140 check_for_bios_corruption+0xcb/0x120() [ 1808.529193] Memory corruption detected in low memory [ 1808.529202] Modules linked in: rndis_host cdc_ether usbnet mii rfcomm bnep nls_iso8859_1 joydev btusb bluetooth hp_wmi sparse_keymap hid_rmi intel_rapl intel_soc_dts_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd wl(POE) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_intel_sst_acpi v4l2_common snd_intel_sst_core snd_soc_rt5640 snd_soc_sst_mfld_platform videodev snd_hda_codec_hdmi snd_soc_rl6231 media snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic serio_raw i915 snd_compress snd_pcm_dmaengine snd_seq_midi snd_hda_intel snd_hda_controller snd_seq_midi_event snd_hda_codec drm_kms_helper snd_hwdep drm lpc_ich cfg80211 snd_pcm mei_txe mei shpchp snd_rawmidi i2c_algo_bit iosf_mbi wmi snd_seq snd_seq_device snd_timer hp_wireless video [ 1808.529437] dw_dmac int3400_thermal dw_dmac_core acpi_thermal_rel int3403_thermal processor_thermal_device intel_smartconnect snd i2c_hid hid rfkill_gpio soundcore i2c_designware_platform snd_soc_sst_acpi i2c_designware_core spi_pxa2xx_platform 8250_dw pwm_lpss_platform mac_hid pwm_lpss parport_pc ppdev lp parport autofs4 mmc_block sdhci_acpi sdhci [ 1808.529545] CPU: 0 PID: 2767 Comm: kworker/0:0 Tainted: P W OE 3.19.0-16-generic #16-Ubuntu [ 1808.529556] Hardware name: Hewlett-Packard HP Stream Notebook PC 11/8023, BIOS F.08 12/26/2014 [ 1808.529574] Workqueue: events check_corruption [ 1808.529586] ffffffff81a91cc8 ffff88001bcdfcf8 ffffffff817c2235 0000000000000007 [ 1808.529605] ffff88001bcdfd48 ffff88001bcdfd38 ffffffff8107595a ffff8800000013d8 [ 1808.529624] 0000000000000000 ffff880000010000 ffffffff81ede350 0000000000000001 [ 1808.529642] Call Trace: [ 1808.529668] [<ffffffff817c2235>] dump_stack+0x45/0x57 [ 1808.529688] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0 [ 1808.529706] [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50 [ 1808.529728] [<ffffffff810135e0>] ? __switch_to+0x150/0x5e0 [ 1808.529749] [<ffffffff8105c84b>] check_for_bios_corruption+0xcb/0x120 [ 1808.529769] [<ffffffff8105c8ae>] check_corruption+0xe/0x40 [ 1808.529787] [<ffffffff8108eb78>] process_one_work+0x158/0x430 [ 1808.529806] [<ffffffff817c40f6>] ? __schedule+0x6/0x8e0 [ 1808.529824] [<ffffffff8108f6bb>] worker_thread+0x5b/0x530 [ 1808.529842] [<ffffffff8108f660>] ? rescuer_thread+0x3a0/0x3a0 [ 1808.529861] [<ffffffff81094759>] kthread+0xc9/0xe0 [ 1808.529881] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0 [ 1808.529901] [<ffffffff817c9298>] ret_from_fork+0x58/0x90 [ 1808.529921] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0 [ 1808.529934] ---[ end trace 9b8fbf0e79e26b3f ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bcmwl in Ubuntu. https://bugs.launchpad.net/bugs/1379524 Title: 14e4:4365 Weak wifi signal Status in bcmwl package in Ubuntu: Expired Bug description: On a fresh install of Ubuntu 14.04 on my new HP Pavilion 15-020ng with Broadcom BCM43142 hybrid wifi/bluetooth chipset the official driver from Broadcom does not work correctly. On 2.4 GHz the wifi signal is so low that the connection is interrupted on a regular basis (network manager shows 26 Mb/s), other devices (notebook, tablet) do have a normal signal at the same position and even this laptop has a good signal with Windows 7 (Dual-Boot). The exact device name: 08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01) I am using the official wl driver that was installed by default, also tried reinstalling via "sudo apt-get install bcmwl-kernel-source --reinstall" without improvement and "sudo iwconfig wlan0 power off". Also blacklisted b43, brcmsmac and bcma as suggested by "Linux Wireless". ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: bcmwl-kernel-source 6.30.223.141+bdcom-0ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 CurrentDesktop: Unity Date: Thu Oct 9 23:04:07 2014 InstallationDate: Installed on 2014-09-27 (12 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) SourcePackage: bcmwl UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1379524/+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
