Comment 4 for bug 653593

In my Acer 4730z, the rt2800pci modules causes the wifi to never connect to any AP.

Here is the relevant lspci -vv output:
04:00.0 Network controller: RaLink RT2860
 Subsystem: Foxconn International, Inc. Device e002
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 17
 Region 0: Memory at d6700000 (32-bit, non-prefetchable) [size=64K]
 Capabilities: [40] Power Management version 3
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME+
 Capabilities: [50] MSI: Enable- Count=1/32 Maskable- 64bit+
  Address: 0000000000000000 Data: 0000
 Capabilities: [70] Express (v1) Endpoint, MSI 00
  DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <128ns, L1 unlimited
   ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
  DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
   RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
   MaxPayload 128 bytes, MaxReadReq 512 bytes
  DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
  LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us
   ClockPM+ Surprise- LLActRep- BwNot-
  LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk+
   ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
 Capabilities: [100 v1] Advanced Error Reporting
  UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
  UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
  UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
  CESta: RxErr+ BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
  CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
  AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
 Kernel driver in use: rt2860
 Kernel modules: rt2860sta, rt2800pci

There is a pretty simple workaround:
Create a file named: /etc/modprobe.d/rt2800pci-disable.conf
And set the contents to:
blacklist rt2800pci

Hopefully, this will help other affected users until a real fix for this issue is provided.