I've tried a lot of proposed solutions, most of them adding files to /etc/pm/config.d, as well as WiFi stops working after waking from suspend and nothing has worked.

hardware info:

[colleen@colleen-HP ~]$ sudo lshw -C network
[sudo] password for colleen: 
  *-network               
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
       version: 06
       serial: 2c:27:d7:b1:ea:67
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=N/A latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:4000(size=256) memory:c1404000-c1404fff memory:c1400000-c1403fff
  *-network
       description: Wireless interface
       product: Centrino Wireless-N 1000
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:0d:00.0
       logical name: wlan0
       version: 00
       serial: 8c:a9:82:99:48:8c
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-21-generic-pae firmware=39.31.5.1 build 35138 ip=192.168.0.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:48 memory:c5500000-c5501fff

Is anyone else still having this problem? The two solutions I haven't tried are installing wicd and upgrading because I've heard both are kind of unstable/buggy and wicd frankly scares me.