$ diff before.txt after.txt
651a652,704
> [   57.040200] usb 1-1: new high-speed USB device number 2 using ehci_hcd
> [   57.175830] usb 1-1: New USB device found, idVendor=17e9, idProduct=0150
> [   57.175842] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [   57.175852] usb 1-1: Product: I-O DATA USB-RGB
> [   57.175860] usb 1-1: Manufacturer: DisplayLink
> [   57.175867] usb 1-1: SerialNumber: 0150-162507
> [   57.309476] udlfb: DisplayLink I-O DATA USB-RGB - serial #0150-162507
> [   57.309490] udlfb: vid_17e9&pid_0150&rev_0003 driver's dlfb_data struct at f76ea000
> [   57.309498] udlfb: console enable=1
> [   57.309504] udlfb: fb_defio enable=1
> [   57.309510] udlfb: shadow enable=1
> [   57.310194] udlfb: vendor descriptor not available (-32)
> [   57.310399] udlfb: allocated 4 65024 byte urbs
> [   57.454710] udlfb: Unable to get valid EDID from device/display
> [   57.454896] udlfb: 640x350 valid mode
> [   57.454903] udlfb: 640x400 valid mode
> [   57.454910] udlfb: 721x400 valid mode
> [   57.454917] udlfb: 640x480 valid mode
> [   57.454924] udlfb: 640x480 valid mode
> [   57.454931] udlfb: 640x480 valid mode
> [   57.454938] udlfb: 640x480 valid mode
> [   57.454945] udlfb: 800x600 valid mode
> [   57.454951] udlfb: 800x600 valid mode
> [   57.454958] udlfb: 800x600 valid mode
> [   57.454965] udlfb: 800x600 valid mode
> [   57.454972] udlfb: 800x600 valid mode
> [   57.454979] udlfb: 1024x768 valid mode
> [   57.454986] udlfb: 1024x768 valid mode
> [   57.454993] udlfb: 1024x768 valid mode
> [   57.455000] udlfb: 1024x768 valid mode
> [   57.455012] udlfb: 1024x768 valid mode
> [   57.455019] udlfb: 1152x864 valid mode
> [   57.455026] udlfb: 1280x960 valid mode
> [   57.455033] udlfb: 1280x960 valid mode
> [   57.455040] udlfb: 1280x1024 valid mode
> [   57.455048] udlfb: 1280x1024 valid mode
> [   57.455055] udlfb: 1280x1024 valid mode
> [   57.455062] udlfb: 1600x1200 valid mode
> [   57.455069] udlfb: 1600x1200 valid mode
> [   57.455076] udlfb: 1600x1200 valid mode
> [   57.455083] udlfb: 1600x1200 valid mode
> [   57.455090] udlfb: 1600x1200 valid mode
> [   57.455098] udlfb: 1792x1344 beyond chip capabilities
> [   57.455105] udlfb: 1792x1344 beyond chip capabilities
> [   57.455112] udlfb: 1856x1392 beyond chip capabilities
> [   57.455120] udlfb: 1856x1392 beyond chip capabilities
> [   57.455127] udlfb: 1920x1440 beyond chip capabilities
> [   57.455134] udlfb: 1920x1440 beyond chip capabilities
> [   57.455143] udlfb: Reallocating framebuffer. Addresses will change!
> [   57.458092] udlfb: 800x600 valid mode
> [   57.458100] udlfb: set_par mode 800x600
> [   57.465326] udlfb: DisplayLink USB device /dev/fb1 attached. 800x600 resolution. Using 1880K framebuffer memory
> [   57.466122] usbcore: registered new interface driver udlfb