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[Bug 1579351] Re: /proc/sys/abi/ldt16 does not exist


1448412, while doing some research towards this I noticed:
cat /boot/config-4.4.0-22-generic | grep CONFIG_X86_ESPFIX64

cat /boot/config-4.4.0-22-generic | grep 16B

cat /boot/config-4.4.0-22-generic | grep CONFIG_X86_64=

So, it appears the proper configuration and its dependencies are in
place for 16-bit support.

Also, from my read of it, one has to make some manual modifications to
the WINE environment (ex. adjust WINE prefix to 32-bit from default
64-bit when in a 64-bit host OS, and ensuring the Windows version set is
a legacy one like Windows XP).

Could you please advise?

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

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  /proc/sys/abi/ldt16 does not exist

Status in linux package in Ubuntu:

Bug description:

  I guess I stumbled upon a VERY old problem;

  I can't make some of my windows-programs work, despite they have a
  gold rating in wine.

  Some old Windows binaries that include 16-Bit Code need the kernel to
  have echo 1 >> /proc/sys/abi/ldt16 enabled, but that pseudo-file does
  not exist on my 16.04 Ubuntu system.

  root@Johnnyfive:~# echo 1 >> /proc/sys/abi/ldt16
  -bash: /proc/sys/abi/ldt16: Datei oder Verzeichnis nicht gefunden
  root@Johnnyfive:~# ls /proc/sys/abi/

  The issue is discussed in lots of places:
  --> https://lkml.org/lkml/2014/5/7/508
  --> https://forum.winehq.org/viewtopic.php?f=8&t=22700
  --> http://ubuntuforums.org/archive/index.php/t-2228133.html

  The issue seems to be a very old regression, a bug on this was filed and closed in 2014.
  --> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1328965

  So I think that this is a very old and annoying regression that just wont stop
  keep coming back. Could you please include the fix once and for all?

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
   /dev/snd/controlC0:  ulrich     1816 F.... pulseaudio
  CurrentDesktop: LXDE
  Date: Sat May  7 12:36:44 2016
  HibernationDevice: RESUME=UUID=93df4898-fb0b-4278-ade1-ccfffb092022
  InstallationDate: Installed on 2016-04-02 (35 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
   enp2s0    no wireless extensions.

   enp3s0    no wireless extensions.

   lo        no wireless extensions.
  MachineType: Shuttle Inc. SX58

  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic root=/dev/mapper/fivegroup-root ro quiet splash
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157

  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-04-25 (12 days ago)
  dmi.bios.date: 03/02/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080016
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: SX58
  dmi.board.vendor: Shuttle Inc.
  dmi.board.version: V10
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Intel
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080016:bd03/02/2010:svnShuttleInc.:pnSX58:pvrV10:rvnShuttleInc.:rnSX58:rvrV10:cvnIntel:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: SX58
  dmi.product.version: V10
  dmi.sys.vendor: Shuttle Inc.

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