I've upgraded to Jaunty since writing the comment above
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/293946/comments/9.
Problem still exists. It still looks and behaves the same. Signal
strength is 15% and throughput is about 5.something Mbps. Instead of
54Mbps.
The chipset is now described as
[ 13.621424] usbcore: registered new interface driver rtl8187
[ 13.862659] phy0: hwaddr 00:15:af:07:e4:80, RTL8187vB (default) V1 +
rtl8225z2
If it helps, "lsusb -vd 0bda:8187" reports it as:
Bus 001 Device 002: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless
Adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0bda Realtek Semiconductor Corp.
idProduct 0x8187 RTL8187 Wireless Adapter
bcdDevice 1.00
iManufacturer 1 Manufacturer_Realtek_RTL8187_
iProduct 2 RTL8187_Wireless
iSerial 3 0015AF07E480
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 Wireless Network Card
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 0 (Defined at Interface level)
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 Bulk-IN,Bulk-OUT,Bulk-OUT
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
--
realtek rtl8187 weak signal, occasional slow performance
https://bugs.launchpad.net/bugs/293946
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