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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 ]---

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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)

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