kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

TJ, this bug was reported a while ago and there hasn't been any activity
in it recently. We were wondering if this is still an issue? If so,
could you please test for this with the latest development release of
Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-
live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

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

** Attachment removed: "Slackware64 13.1 dmesg"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/342926/+attachment/1441863/+files/dmesg

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https://bugs.launchpad.net/bugs/342926

Title:
  No PCI IOMEM space available below 4GB

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Incomplete
Status in “nvidia-graphics-drivers-180” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: nvidia-glx-180

  This can affect almost all releases (6.10 7.04, 7.10, 8.04, 8.10,
  9.04+)

  It usually only shows up dramatically with video cards that have large
  memory (e.g. 256MB) and on systems that

  a) have 3GB or more RAM and/or
  b) have 64-bit CPUs on 32-bit north-bridge chipsets (e.g. Intel 945)

  Typical symptom: "failed to load the nvidia kernel module"

  This issue could affect all versions of the Nvidia proprietary drivers
  and others.

  Recently I've seen several users in IRC #ubuntu asking for help but
  without solving the issue. When I saw Keith Dewitt asking the same
  question on 2009-03-14 I arranged with him to access his system via
  SSH and a multiuser screen session to diagnose the issue. Keith was
  very patient and supportive and his assistance led directly to this
  discovery.

  There are also threads on the nvidia forums with the same issues.

  The symptoms are that users report that systems with Nvidia-based
  graphics cards won't start the X server successfully. There are a wide
  range of reports that don't immediately pin-point the cause.

  The fact the nvidia kernel module failed to load is the biggest clue.

  Check dmesg and /var/log/kern.log for something along these lines:

  [   20.137717] nvidia: module license 'NVIDIA' taints kernel.                   
  [   20.412849] ACPI: PCI Interrupt Link [LNEB] enabled at IRQ 18                
  [   20.412858] nvidia 0000:02:00.0: PCI INT A -> Link[LNEB] -> GSI 18 (level, low) -> IRQ 18                                                                    
  [   20.412862] NVRM: This PCI I/O region assigned to your NVIDIA device is invalid:
  [   20.412862] NVRM: BAR1 is 256M @ 0x30000000 (PCI:0002:00.0)                  
  [   20.412865] NVRM: This is a 64-bit BAR mapped above 4GB by the system BIOS or
  [   20.412865] NVRM: Linux kernel. The NVIDIA Linux graphics driver and other   
  [   20.412866] NVRM: system software do not currently support this configuration
  [   20.412867] NVRM: reliably.                                                  
  [   20.412872] nvidia: probe of 0000:02:00.0 failed with error -1               
  [   20.412887] NVRM: The NVIDIA probe routine failed for 1 device(s).           
  [   20.412889] NVRM: None of the NVIDIA graphics adapters were initialized!     

  Also check /var/log/Xorg.0.log or /var/log/Xorg.0.log.old for this
  tell-tale:

  (--) PCI:*(0@2:0:0) nVidia Corporation GeForce 8400 GS rev 161, Mem @ 0xfd000000
  /16777216, 0x130000000/268435456, 0xfa000000/33554432, I/O @ 0x0000ec00/128, BIO
  S @ 0x????????/131072

  (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
  (==) NVIDIA(0): RGB weight 888
  (==) NVIDIA(0): Default visual is TrueColor
  (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
  (**) NVIDIA(0): Enabling RENDER acceleration
  (II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
  (II) NVIDIA(0):     enabled.
  (EE) NVIDIA(0): Failed to load the NVIDIA kernel module!
  (EE) NVIDIA(0):  *** Aborting ***
  (II) UnloadModule: "nvidia"

  Notice that the video card's IOMEM allocation is at 5GB
  (0x130000000/268435456 = 5GB/256MB).

  /var/log/dmesg shows:

  [    0.000000]  BIOS-e820: 0000000100000000 - 0000000130000000
  (usable)

  [    0.477047] pci 0000:00:0b.0: BAR 9: can't allocate resource
  [    0.477047] pci 0000:02:00.0: BAR 1: can't allocate resource 

  lspci -nn reveals:
  00:0b.0 PCI bridge [0604]: nVidia Corporation MCP73 PCI Express bridge [10de:056
  e] (rev a1)
  02:00.0 VGA compatible controller [0300]: nVidia Corporation GeForce 8400 GS [10
  de:0404] (rev a1)

  lspci -vvnn -s 02:00.0

  02:00.0 VGA compatible controller [0300]: nVidia Corporation GeForce 8400 GS [10
  de:0404] (rev a1)                                                               
          Subsystem: eVga.com. Corp. Device [3842:c738]                           
          Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Step
  ping- SERR- FastB2B- DisINTx-                                                   
          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
  <MAbort- >SERR- <PERR- INTx-                                                    
          Latency: 0, Cache Line Size: 64 bytes
          Interrupt: pin A routed to IRQ 18
          Region 0: Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
          Region 1: Memory at 130000000 (64-bit, prefetchable) [size=256M]
          Region 3: Memory at fa000000 (64-bit, non-prefetchable) [size=32M]
          Region 5: I/O ports at ec00 [size=128]
          Expansion ROM at febe0000 [disabled] [size=128K]
          Capabilities: <access denied>
          Kernel modules: nvidia, nvidiafb

  The reason for the failure is that the video chipset's PCI IOMEM RAM
  (in this case 256MB) cannot be allocated in the PCI IOMEM region below
  4GB (from 3GB-4GB) since other devices have already been given
  assignments that mean there isn't a 256MB gap available on a 256MB
  boundary - in other words, either at 3GB or 3.25GB.

  The host system has 4GB of system RAM which causes the kernel to
  prevent the use of the 3GB-3.25GB range, and other allocations prevent
  the use of other ranges.

  Workarounds:

  a) alter the BIOS video IOMEM position to below 4GB (on 64-bit architectures), or
  b) some BIOSes allow setting the "top of memory below 4GB" If so, set it to less than or equal to 2.75GB and try progressively lower values - one should allow a hole large enough for the video IOMEM to fit starting at 3GB (below 4GB), or
  c) reduce the system's RAM to less than 2.5GB to leave sufficient free space.

  For the last year I've had an ongoing project to write a completely
  new PCI IOMEM system for the Linux kernel. I've added the mainline bug
  report that triggered the development to this report. Additionally,
  here is a link to my Wiki describing the issue and solutions.

  http://tjworld.net/wiki/Linux/PCIDynamicResourceAllocationManagement

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