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[mohammed <medarab00@xxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/821983

Title:
  avast, /proc/sys/kernel/shmmax is insufficient for avast to run

Status in “linux” package in Ubuntu:
  Fix Committed

Bug description:
  Avast for linux requires a higher value in order to be able to update
  its signature database. This is the info they post on their forum to
  help people fix the issue:

  "Starting with the 400.vps, version 100328-1, one of it's internal block reached the inner limit 33554432 bytes. It's a kernel variable which
  is (quite artificially) limiting the maximum size of any SHM memory block - and 33554432 was a default for some kernels.

  Solution? Set the limit to higher values (as root):

  sysctl -w kernel.shmmax=128000000
  OR
  echo 128000000 >/proc/sys/kernel/shmmax

  Place those lines to /etc/init.d/rcS or equivalent file (it's
  distribution-specific a bit - see /etc/inittab, the sysinit runlevel)
  to have them set automatically (just after boot)."

  The current value in Ubuntu 10.04 is:
  silviu@silviu-lucid:~$ cat /proc/sys/kernel/shmmax 
  33554432

  Is there any reason to have this default and not something along the
  lines that the Avast staff suggest. Could future Ubuntu releases have
  "128000000" as default ? Would be nice if newbie switchers could just
  fire off their on demand scanner and have it work out of the box.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image (not installed)
  Regression: No
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.38-10.46~lucid1-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  silviu     1428 F.... pulseaudio
   /dev/snd/pcmC0D0p:   silviu     1428 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xfb500000 irq 52'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,1043841b,00100302'
     Controls      : 32
     Simple ctrls  : 18
  Date: Sat Aug  6 18:49:08 2011
  HibernationDevice: RESUME=UUID=95018fd9-2d30-4d41-abf1-e925fe91c88e
  InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110720.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-10-generic root=UUID=a2bed996-5e17-4f52-b8db-274d9ee35737 ro quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  RelatedPackageVersions: linux-firmware 1.34.7
  RfKill:
   
  SourcePackage: linux
  dmi.bios.date: 05/09/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1013
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8P67 LE
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0X
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1013:bd05/09/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8P67LE:rvrRevX.0X:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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