[Linrad] Re: RX OVERRUN_ERROR cause: "Visual Effects" (Ubuntu)

["Thomas D. Dean" <speakeasy.org; tomdean@xxxxxxxxxxxxxxxx>]

On Sun, 2009-05-31 at 23:37 +0200, Leif Asbrink wrote:

> Go to System -> Preferences -> Appearance -> Visual Effects
> and select "None."

My system was set to "None" a long time ago.  I have been looking into X
smearing and tearing for a while.

I noticed another strange thing,

If I set
CIC2 8
CIC5 6
RCF  4

I get a message "Error the sampling speed is far too high for USB 1.0"

My USB port is 2.0

# lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 008: ID 0403:6001 Future Technology Devices
International, Ltd FT232 USB-Serial (UART) IC
Bus 001 Device 004: ID 0557:2008 ATEN International Co., Ltd UC-232A
Serial Port [pl2303]
Bus 001 Device 003: ID 0557:2008 ATEN International Co., Ltd UC-232A
Serial Port [pl2303]
Bus 001 Device 002: ID 050d:0237 Belkin Components F5U237 USB 2.0 7-Port
Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

The Bus is 001, via Belkin, Device 002 to Bus 001, Device 008: 0403:6001

# sudo lsusb -v -d 0403:6001
Bus 001 Device 008: ID 0403:6001 Future Technology Devices
International, Ltd FT232 USB-Serial (UART) IC
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0403 Future Technology Devices International, Ltd
  idProduct          0x6001 FT232 USB-Serial (UART) IC
  bcdDevice            6.00
  iManufacturer           1 FTDI
  iProduct                2 SDR-IQ
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              400mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              2 SDR-IQ
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 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     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)

Tom


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