Ubuntu Sauce Report

The purpose of this document is to disect the Mainline to Ubuntu Kernel delta. Detailing the items we are carrying, their benefit to Ubuntu, and the plans for each going forward.

External Drivers

• SAUCE: update compcache version to 0.5.3
• SAUCE: (no-up) swap: Add notify_swap_entry_free callback for compcache
  • We are carrying compcache to facilitate booting on small memory systems, typically those with less than 256MB of ram.
• SAUCE: (no-up) Export dm_disk function of device-mapper
• SAUCE: updated dm-raid45 module version to 2009.04.24 (2.6.30-rc3)
  • dm-raid45 is a PC part sw part hw raid implementation for a small number of raid cards. This has been objected to upstream by the maintainer as it abuses some of the interfaces.
• update ndiswrapper to 1.55
  • ndiswrapper allows us to use Windows drivers for wireless and network cards. This is not acceptable upstream but key to support of a number of wireless cards.
• SAUCE: Add LIRC drivers
  • LIRC brings in support for infrared controllers. Required for some Dell systems.
• Add lenovo-sl-laptop as Ubuntu third-party drivers
  • Adds support for Lenovo hotkeys for later laptops. Currently not acceptable upstream. We are working to push this one upstream.
• Updated ubuntu/drbd to upstream version
  • The Distributed Replicated Block Device. Fundamental building block for high availability clusters. Maintained out of tree by www.drbd.org.

    Documentation: http://www.drbd.org/docs/about/

• add proper aufs source tree from 20080922
• AUFS -- update to aufs2-30 20090727
  • Aufs provides our union filsystem support for live cds and for LTSP. Upstream objects to the way in which this patch set implements unions. The preferred option upstream is to implement unions at the VFS layer. We are maintaining and updating aufs until such time that VFS unions mounts are ready. We are engaging with upstream to help drive this including testing these new patches. We are expecting VFS unions to be ready for the LL release when this can likely be dropped.
• SAUCE: FSAM7400: select CHECK_SIGNATURE
• ubuntu: Add fsam7400 sw kill switch driver
  • This driver provides software rfkill for the Fujitsu Siemens Amilo M 7400. This driver does not appear to be automatically loaded nor protected against missloading. It is being reviewed for pushing to staging.
• Update iscsitarget to 0.4.17
  • Adds iSCSI target driver, allowing devices on remote machines to be mounted as if local over a lan.
• SAUCE: toshiba_acpi -- add acpi hotkey kernel thread
• SAUCE: toshiba_acpi -- pull in current -dev version of driver
  • Update the in-kernel toshiba_acpi driver to a later version and add a hotkey thread. This adds hotkey support for a number of Toshiba laptops.
• SAUCE: (no-up) Modularize vesafb
  • allows us to modularize vesafb. Not sure what we use this for.
• ubuntu: Add misc drivers from hardy lum -- appleir

• SAUCE: appleir: Enable driver for new MacBook Pro

  • enabled infrared support on Apple MaxBooks

• ubuntu: New tlsup driver for toshiba laptops
  • adds an alternative toshiba hot key driver. This was an Intrepid experiment which it was hoped would replace toshiba_acpi. This driver was worse and should be dropped.
• ubuntu: VIA - Add VIA DRM Chrome9 3D engine
  • adds 3D support for the VIA Chrome9 chipsets
• ubuntu: Added rfkill drivers

  • Adds software rfkill support for Averatec 5100P and Packard Bell EasyNote E5. Is being reviewed for pushing to staging.

• ubuntu: Add acx, prism2_usb wireless drivers
  • adds the acx wireless driver. This driver seems to be problematic and appears to have provenance issues. Will be dropped.
• ubuntu: Add ov511 and bt-sco drivers
  • adds the ov511 driver
• SAUCE: pm: Config option to disable handling of console during suspend/resume
  • add the ability to allow us to keep the console on during suspend/resume
• ubuntu: Add misc drivers from hardy lum -- lmpcm_usb

  • USB Logitech MediaPlay Cordless Mouse driver

• ubuntu: Add misc drivers from hardy lum -- thinkpad
  • various thinkpad enablement drivers, including the accelerometer
• SAUCE: hostap: send events on data interface as well as master interface
  • ensures network manager gets the events it expects on the right interfaces
• SAUCE: Enable speedstep for sonoma processors.
  • enabled speedstep for the sonoma family of processors
• SAUCE: make fc transport removal of target configurable
  • make FC transport handle loss and reaquirey of devices under the same name

PACKAGING TWEEKS

• SAUCE: disable adding scsi headers to linux-libc-dev
• SAUCE: (no-up) Enable ubuntu extra subdirectory
• SAUCE: (no-up) version: Implement version_signature proc file.
• SAUCE: [PATCH] Add extra headers to linux-libc-dev
  • these are all local modifications to allow packaging under Ubuntu and therefore will never be moved upstream.

QUIRKS

• SAUCE: hotkey quirks for various Zeptro Znote and Fujitsu Amilo laptops
• SAUCE: Dell XPS710 reboot quirk
• SAUCE: Added quirk for Linksys WUSB600N USB wifi-n networking adapter
• SAUCE: quickcam: Enable double-buffering by default
• Sony laptop: Some Sony Vaia laptops do not enable wwan power by default.
• Fix webcam having USB ID 0ac8:303b
• SAUCE: Enable HDMI audio codec on Studio XPS 1340
• SAUCE: Dell laptop digital mic does not work, PCI 1028:0271
• Add Dell Dimension 9200 reboot quirk Bug: #271370
• SAUCE: Adds support for COMPAL JHL90 webcam
• SAUCE: Enable an e1000e Intel Corporation 82567 Gigabit controller
• SAUCE: Correctly blacklist Thinkpad r40e in ACPI
• SAUCE: tulip: Define ULI PCI ID's
• SAUCE: tulip: Let dmfe handle davicom on non-sparc
• SAUCE: r8169: disable TSO by default for RTL8111/8168B chipsets.
• SAUCE: ata: blacklist FUJITSU MHW2160BH PL
  • these are all minor changes quirking specific devices. They likely should all be pushed upstream where feasable.

CONFIGURATION

• SAUCE: nbd: Change default partitions per device to 15
• SAUCE: hostap: Change initial operation mode to managed (infra)
• SAUCE: libata: Ignore HPA by default.
• SAUCE: Add MODULE_ALIAS for Dell WMI module
• SAUCE: Lower warning level of some PCI messages
  • various changes to defaults. Mostly these are local changes we need to maintain. The MODULE_ALIASES likely could be pushed.

BUG FIXES

• [Upstream] mmc: prevent dangling block device from accessing stale queues
  • pending a proper fix from upstream.
• iwl3945: do not send scan command if channel count zero
  • SUSPICIOUS -- should have been in v2.6.28-rc4 and yet still applies
• Revert "[Bluetooth] Eliminate checks for impossible conditions in IRQ handler"
  • probabally should be dropped

• SAUCE: fix kernel oops in VirtualBox during paravirt patching

  • this should be either upstreamed or dropped
• SAUCE: drivers: Remove some duplicate device entries in various modules
  • is meant to have gone upstream, check this
• SAUCE: Guest OS does not recognize a lun with non zero target id on Vmware ESX Server
  • prevents crashes with VMware. need to check if vmware is ok now
• SAUCE: input/mouse/alps: Do not call psmouse_reset() for alps
  • alps reset used to cause loss of the touchpad. Do we still need this?
• SAUCE: Catch nonsense keycodes and silently ignore
  • prevents bogus keycodes being reported unnecessarily
• SAUCE: Restore VT fonts on switch
  • ensure we reload fonts on VT switch. This may not be needed with KMS etc

LPIA

• SAUCE: LPIA Logical reset of USB port on resume
• SAUCE: LPIA Reboot fix for Intel Crownbeach development boards
  • OEM specific patches for their supported platforms.

ARM enablement

• mpt2sas: Change reset_type enum to avoid namespace collision.
• Do not use OOB with MLC NAND
• ARM: Add more cache memory types macros
  • these patches are required for arm integration