This bug was fixed in the package linux - 4.4.0-161.189

---------------
linux (4.4.0-161.189) xenial; urgency=medium

  * xenial/linux: 4.4.0-161.189 -proposed tracker (LP: #1841544)

  * flock not mediated by 'k' (LP: 1658219)
    - Revert "UBUNTU: SAUCE: apparmor: flock mediation is not being, enforced on
      cache check"

  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis

linux (4.4.0-160.188) xenial; urgency=medium

  * xenial/linux: 4.4.0-160.188 -proposed tracker (LP: #1840021)

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

  * EeePC 1005px laptop backlight is off after system boot up (LP: #1837117)
    - platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys 
from
      asus_nb_wmi

  * CVE-2019-10638
    - [Config] CONFIG_TEST_HASH=n
    - siphash: add cryptographically secure PRF
    - inet: switch IP ID generator to siphash

  * Stacked onexec transitions fail when under NO NEW PRIVS restrictions
    (LP: #1839037)
    - SAUCE: apparmor: fix nnp subset check failure, when stacking

  * AppArmor onexec transition causes WARN kernel stack trace (LP: #1838627)
    - SAUCE: apparmor: fix audit failures when performing profile transitions

  * flock not mediated by 'k' (LP: 1658219) // Ubuntu 16.04: read access
    incorrectly implies 'm' rule (LP: 1838090)
    - SAUCE: apparmor: flock mediation is not being, enforced on cache check

  * bcache: bch_allocator_thread(): hung task timeout (LP: #1784665) // Tight
    timeout for bcache removal causes spurious failures (LP: #1796292)
    - SAUCE: bcache: fix deadlock in bcache_allocator

  * bcache: bch_allocator_thread(): hung task timeout (LP: #1784665)
    - bcache: improve bcache_reboot()
    - bcache: add journal statistic
    - bcache: fix high CPU occupancy during journal
    - bcache: fix incorrect sysfs output value of strip size
    - bcache: fix error return value in memory shrink
    - bcache: fix using of loop variable in memory shrink
    - bcache: Fix indentation
    - bcache: Add __printf annotation to __bch_check_keys()
    - bcache: Annotate switch fall-through
    - bcache: Fix kernel-doc warnings
    - bcache: Remove an unused variable
    - bcache: Suppress more warnings about set-but-not-used variables
    - bcache: Reduce the number of sparse complaints about lock imbalances
    - bcache: Move couple of functions to sysfs.c

  * CVE-2019-3900
    - vhost: introduce vhost_vq_avail_empty()
    - vhost_net: tx batching
    - vhost_net: do not stall on zerocopy depletion
    - vhost-net: set packet weight of tx polling to 2 * vq size
    - vhost_net: use packet weight for rx handler, too
    - vhost_net: introduce vhost_exceeds_weight()
    - vhost: introduce vhost_exceeds_weight()
    - vhost_net: fix possible infinite loop
    - vhost: scsi: add weight support

  * Xenial: ZFS deadlock in shrinker path with xattrs (LP: #1839521)
    - SAUCE: (noup) Update zfs to 0.6.5.6-0ubuntu28

  * CVE-2019-13648
    - powerpc/tm: Fix oops on sigreturn on systems without TM

  * CVE-2018-20856
    - block: blk_init_allocated_queue() set q->fq as NULL in the fail case

  * CVE-2019-14283
    - floppy: fix out-of-bounds read in copy_buffer

  * CVE-2019-14284
    - floppy: fix div-by-zero in setup_format_params

  * Xenial update: 4.4.186 upstream stable release (LP: #1838467)
    - Input: elantech - enable middle button support on 2 ThinkPads
    - samples, bpf: fix to change the buffer size for read()
    - mac80211: mesh: fix RCU warning
    - dt-bindings: can: mcp251x: add mcp25625 support
    - can: mcp251x: add support for mcp25625
    - Input: imx_keypad - make sure keyboard can always wake up system
    - ARM: davinci: da850-evm: call regulator_has_full_constraints()
    - ARM: davinci: da8xx: specify dma_coherent_mask for lcdc
    - md: fix for divide error in status_resync
    - bnx2x: Check if transceiver implements DDM before access
    - udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
    - x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()
    - x86/tls: Fix possible spectre-v1 in do_get_thread_area()
    - mwifiex: Abort at too short BSS descriptor element
    - fscrypt: don't set policy for a dead directory
    - mwifiex: Don't abort on small, spec-compliant vendor IEs
    - USB: serial: ftdi_sio: add ID for isodebug v1
    - USB: serial: option: add support for GosunCn ME3630 RNDIS mode
    - usb: gadget: ether: Fix race between gether_disconnect and rx_submit
    - usb: renesas_usbhs: add a workaround for a race condition of workqueue
    - staging: comedi: dt282x: fix a null pointer deref on interrupt
    - staging: comedi: amplc_pci230: fix null pointer deref on interrupt
    - carl9170: fix misuse of device driver API
    - VMCI: Fix integer overflow in VMCI handle arrays
    - MIPS: Remove superfluous check for __linux__
    - e1000e: start network tx queue only when link is up
    - perf/core: Fix perf_sample_regs_user() mm check
    - ARM: omap2: remove incorrect __init annotation
    - be2net: fix link failure after ethtool offline test
    - ppp: mppe: Add softdep to arc4
    - sis900: fix TX completion
    - dm verity: use message limit for data block corruption message
    - kvm: x86: avoid warning on repeated KVM_SET_TSS_ADDR
    - ARC: hide unused function unw_hdr_alloc
    - s390: fix stfle zero padding
    - s390/qdio: (re-)initialize tiqdio list entries
    - s390/qdio: don't touch the dsci in tiqdio_add_input_queues()
    - KVM: x86: protect KVM_CREATE_PIT/KVM_CREATE_PIT2 with kvm->lock
    - Linux 4.4.186

 -- Stefan Bader <stefan.ba...@canonical.com>  Tue, 27 Aug 2019 09:49:19
+0200

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-20856

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-10638

-- 
You received this bug notification because you are a member of नेपाली
भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1837117

Title:
  EeePC 1005px laptop backlight is off after system boot up

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Disco:
  Fix Released
Status in linux source package in Eoan:
  Fix Released

Bug description:
  == SRU Justification ==
  Commit 78f3ac76d9e5 ("platform/x86: asus-wmi: Tell the EC the OS will
  handle the display off hotkey") causes the backlight to be permanently off
  on various EeePC laptop models using the eeepc-wmi driver (Asus EeePC
  1015BX, Asus EeePC 1025C).

  == Fix ==
  * 1dd93f87 (platform/x86: asus-wmi: Only Tell EC the OS will handle
  display hotkeys from asus_nb_wmi)

  This patch addes a .wmi_backlight_set_devstate quirk for specific
  models to make asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL)
  conditional.

  Only X/D contain the commit that introduce this issue (78f3ac76), this
  patch can be cherry-picked into D.

  For X, it needs some content adjustment to add quirks only to those
  models that exist in Xenial tree.

  == Test ==
  Test kernels could be found here:
  https://people.canonical.com/~phlin/kernel/lp-1837117-eeepc/

  Bug reporter has verified that this fix works as expected on X.

  == Regression Potential ==
  Low, quirks limited to specific ASUS laptops and by far there is no
  further change to this in upstream kernel.


  == Original Bug Report ==
  After kernel update the backlight on my Asus eeepc 1005px becomes off during 
boot up. I can see the login screen if I point light to the screen. The 
backlight is not reacting on brightness adjustment keys. The backlight starts 
working only if I close and open the laptop lid.

  I have tried to:
  * echo 10 > /sys/class/backlight/acpi_video0/brightness
  * echo 125 > /sys/class/backlight/intel_backlight/brightness
  * vbetool dpms on
  * pass "acpi_backlight=vendor" kernel parameter
  * install gdm instead of lightdm
  * create /usr/share/X11/xorg.conf.d/80-backlight.conf with content 
recommended in Kernel/Debugging/Backlight Wiki article
  with no luck.

  The backlight works fine if I pass "acpi_osi=" kernel parameter, the
  brightness is adjusted by keys, but the applet does not react to
  adjustments.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-145-generic 4.4.0-145.171
  ProcVersionSignature: Ubuntu 4.4.0-145.171-generic 4.4.176
  Uname: Linux 4.4.0-145-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Jul 18 22:30:44 2019
  InstallationDate: Installed on 2019-02-17 (151 days ago)
  InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  SourcePackage: linux-signed
  UpgradeStatus: No upgrade log present (probably fresh install)

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