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[flojten <1532538@xxxxxxxxxxxxxxxxxx>]

This is solved. See question
https://answers.launchpad.net/ubuntu/+source/bbswitch/+question/280808
for solution.

** Changed in: bbswitch (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1532538

Title:
  Build error when installing bbswitch-dkms on Ubuntu 14.04.3

Status in bbswitch package in Ubuntu:
  Invalid

Bug description:
  I have an Nvidia Optimus graphic card installed and have the Nvidia
  driver installed and working for my Intel card, but I cannot switch to
  the Nvidia card. This is because bbswitch-dkms will not build during
  install via apt-get or from source.

  My system

   * Ubuntu 14.04.3 LTS
   * NVIDIA Corporation GF119M [GeForce GT 520M]
   * linux-image-3.19.0-42-generic
   * linux-headers-3.19.0-42-generic
   * linux-image-extra-3.19.0-42-generic
   * dkms: 2.2.0.3
   * gcc (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4
   * bbswitch-dkms (0.7-2ubuntu1) 

  When trying to install bbswitch-dkms the following error occurs:

  Unpacking bbswitch-dkms (0.7-2ubuntu1) over (0.7-2ubuntu1) ...
  Setting up bbswitch-dkms (0.7-2ubuntu1) ...
  Loading new bbswitch-0.7 DKMS files...
  Building only for 3.19.0-42-generic
  Building initial module for 3.19.0-42-generic
  Error! Bad return status for module build on kernel: 3.19.0-42-generic (x86_64)
  Consult /var/lib/dkms/bbswitch/0.7/build/make.log for more information.

  The content of make.log is:

  DKMS make.log for bbswitch-0.7 for kernel 3.19.0-42-generic (x86_64)
  lör  9 jan 2016 15:37:02 CET
  make -C /lib/modules/3.19.0-42-generic/build M="$(pwd)" modules
  make[1]: Entering directory `/usr/src/linux-headers-3.19.0-42-generic'
  arch/x86/Makefile:114: stack-protector enabled but compiler support broken
    CC [M]  /var/lib/dkms/bbswitch/0.7/build/bbswitch.o
  /var/lib/dkms/bbswitch/0.7/build/bbswitch.c: In function ‘is_card_disabled’:
  /var/lib/dkms/bbswitch/0.7/build/bbswitch.c:236:1: internal compiler error: Bus error
   }
   ^

  It seems this is the main problem:

  make[1]: Entering directory `/usr/src/linux-headers-3.19.0-42-generic'
  arch/x86/Makefile:114: stack-protector enabled but compiler support broken

  The following log entries appear in syslog during installation and
  building bbswitch-dkms:

  kernel: [  235.068506] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
  kernel: [  235.071273] ata1.00: irq_stat 0x40000001
  kernel: [  235.074011] ata1.00: failed command: READ DMA
  kernel: [  235.076740] ata1.00: cmd c8/00:08:a8:95:07/00:00:00:00:00/e0 tag 27 dma 4096 in
  kernel: [  235.076740]          res 51/40:00:a8:95:07/00:00:00:00:00/00 Emask 0x9 (media error)
  kernel: [  235.082207] ata1.00: status: { DRDY ERR }
  kernel: [  235.084957] ata1.00: error: { UNC }
  kernel: [  235.119639] ata1.00: configured for UDMA/133
  kernel: [  235.119667] sd 0:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
  kernel: [  235.119674] sd 0:0:0:0: [sda] Sense Key : Medium Error [current] [descriptor]
  kernel: [  235.119680] sd 0:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed
  kernel: [  235.119684] sd 0:0:0:0: [sda] CDB: 
  kernel: [  235.119687] Read(10): 28 00 00 07 95 a8 00 00 08 00
  kernel: [  235.119704] blk_update_request: I/O error, dev sda, sector 497064
  kernel: [  235.122090] ata1: EH complete

  I have installed kernel-headers so all building packages should be
  installed.

  Has anyone encountered this before or know of any solutions?

  Thank you!

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