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Results from lshw show two unclaimed devices. A memory controller and a SMBus. Information on those is scarce, I can't figure out what they are. Some older posts mentioning them have to do with faulty audio, but I don't have any issue whatsoever (yet - I've installed Ubuntu only 2 days ago).

id:    memory
description:    Memory controller
product:    Sunrise Point-H PMC
vendor:     Intel Corporation
physical id:    
1f.2
bus info:   
pci@0000:00:1f.2
version:    31
width:  32 bits
clock:  33MHz (30.3ns)
configuration:  
latency =   0
resources:  
memory  :   dd12c000-dd12ffff

id: serial
description:    SMBus
product:    Sunrise Point-H SMBus
vendor:     Intel Corporation
physical id:    
1f.4
bus info:   
pci@0000:00:1f.4
version:    31
width:  64 bits
clock:  33MHz
configuration:  
latency =   0
resources:  
memory  :   dd132000-dd1320ff
ioport  :   f040(size=32)

OS: Ubuntu 16.04.3 LTS 64 bits
Processor: i7-6700HQ
Laptop model: Dell XPS-15 (9550)
Additional information: In the Additional Drivers tab from Software & Updates, I have:

Device unknown

My question is: Should I care? And if so, how can I resolve these unclaimed devices issues?

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1 Answer 1

Reset to default
2

How to interpret lshw's output

lshw displays nodes with attributes in a tree-like structure (that can be in indented plain text form, HTML, XML or graphically displayed in the GUI). Each node has its individual status: it be CLAIMED (potentially usable) or UNCLAIMED (no driver has been detected for this node), ENABLED (this device is supported and can be used) or DISABLED (this device is supported but has been disabled):

  • a node is marked as CLAIMED if a driver (usually a kernel module or a driver within the monolithic kernel) has been loaded for it
  • a node is marked as UNCLAIMED if no specific support for it has been loaded (or lshw has been unable to identify the driver)
  • a node is marked as ENABLED if a driver has been loaded for it and is fully functional
  • a node is marked as DISABLED if the node has been disabled by a configuration, some hardware failure, etc.

  • PMC is a Memory controller. The one in the image is probably related but there is no module you have to use.

  • The SMBus has though. Details from a skylark sunrise system:

    Device: 00:1f.4
Class:  SMBus
Vendor: Intel Corporation
Device: Sunrise Point-H SMBus
SVendor:        CLEVO/KAPOK Computer
SDevice:        Sunrise Point-H SMBus
Rev:    31
Driver: i801_smbus

    See if you have i801_smbus and if you can load the module into the kernel if that fixes this one.

  • See if i801_smbus is blacklisted in /etc/modprobe.d/blacklist.conf

  • If so try to load it and see if that fixes the unclaimed (don't uncomment the blacklisting before you are sure it works).
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4
  • Thanks a lot for your answer... I tried find /lib/modules -regex .*i801.* and all that is found is kernel/drivers/i2c/busses/i2c-i801.ko.
    – Dominic Comtois
    Dec 28, 2017 at 23:14
  • - see if it is blacklisted in /etc/modprobe.d/blacklist.conf - try to load it and see if that fixes the unclaimed (don't uncomment the blacklisting before you are sure it works).
    – Rinzwind
    Dec 29, 2017 at 0:32
  • Ha! There it is indeed. A comment says that it "causes failure to suspend on HP compaq nc6000 (Ubuntu: #10306)". I commented it out & rebooted; the device is no longer "unclaimend". Thanks again.
    – Dominic Comtois
    Dec 29, 2017 at 6:20
  • @DominicComtois gratz :-)
    – Rinzwind
    Dec 29, 2017 at 8:49

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