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[Bug 1513477] Re: Ralink RT2800pci doesnt work by default

 

The problem here is that the PCI bus probe is returning a corrupted PCI
Vendor ID. Querying the PCI config registers after the system has
started shows the correct Vendor ID, but the kernel seems to 'lose' the
2nd nibble of byte 0, turning 0x18 into 0x10:

This is from the problem PC booted with a 64-bit kernel:

00:0c.0 Network controller [0280]: IBM Device [1014:0601]
	Subsystem: Linksys Device [1737:0067]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR+ INTx-
	Latency: 32 (500ns min, 1000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 5
	Region 0: Memory at eb000000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
00: 14 18 01 06 07 00 10 84 00 00 80 02 08 20 00 00
10: 00 00 00 eb 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 01 80 00 00 37 17 67 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 05 01 02 04
40: 01 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

And this is from a different PC with the same device, on a 32-bit
kernel:

01:09.0 Network controller [0280]: Ralink corp. RT2800 802.11n PCI [1814:0601]
	Subsystem: Linksys Device [1737:0067]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 66 (500ns min, 1000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at 40100000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: rt2800pci
	Kernel modules: rt2800pci
00: 14 18 01 06 17 01 10 04 00 00 80 02 08 42 00 00
10: 00 00 10 40 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 01 80 00 00 37 17 67 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0b 01 02 04
40: 01 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

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https://bugs.launchpad.net/bugs/1513477

Title:
  Ralink RT2800pci doesnt work by default

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  No wifi connection showing, wifi network card is unclaimed

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-generic 4.2.0.16.18
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.2-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  lotuspsychje   1410 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Nov  5 14:57:40 2015
  HibernationDevice: RESUME=UUID=c391bf39-6cd0-4357-89f6-46b8c496b553
  InstallationDate: Installed on 2015-10-28 (8 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  IwConfig:
   lo        no wireless extensions.
   
   enp0s14   no wireless extensions.
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=c53d01a4-d573-4ab2-ad75-f2c8bd8645c3 ro pci=realloc
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.152
  RfKill:
   
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Bestand of map bestaat niet: '/var/log/udev'
  UpgradeStatus: Upgraded to xenial on 2015-10-28 (8 days ago)
  dmi.bios.date: 06/29/2004
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: KV8-MAX3 (VIA K8T800-8237)
  dmi.board.vendor: http://www.abit.com.tw/
  dmi.board.version: 1.x
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd06/29/2004:svn:pn:pvr:rvnhttp//www.abit.com.tw/:rnKV8-MAX3(VIAK8T800-8237):rvr1.x:cvn:ct3:cvr:

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References