[xubuntu-users] Failing to load xubuntu 16.04.1 iso from either USB stick or DVD

[Chris Green]

I am trying to get an xubuntu 16.04.1 iso to boot into 'try out
xubuntu' mode on an Acer Aspire One 751h netbook.  It's failing from
both DVD and USB stick with very similar error messages.

What I am seeing on the screen, when it gives up, is as follows:-

    [  20.818218] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 0
    [  20.818299] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 0
    [  62.896582] usb usb1-port2: Cannot enable. Maybe the USB cable is bad?
    [  63.768584] usb usb1-port2: Cannot enable. Maybe the USB cable is bad?
    [  64.640586] usb usb1-port2: Cannot enable. Maybe the USB cable is bad?
    [  65.512585] usb usb1-port2: Cannot enable. Maybe the USB cable is bad?
    [  65.520822] scsi 0:0:0:0: rejecting I/O to offline device
    [  65.521137] blk_update_request: I/O error, dev sr0, sector 4096
    [  65.521443] Buffer I/O error on dev sr0, logical block 512, async page read
    [  65.521443] Buffer I/O error on dev sr0, logical block 309775, async page read


    Busybox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
    Enter 'help; for a list of built-in commands.

    (initramfs) 


I don't guarantee I've transcribed those times right!  :-)


The system quite happily boots into an installed xubuntu 16.04.1 (i.e. 
it's installed on the internal disk drive), the problem is that it
won't boot the latest kernel version.  When booted into xubuntu
everything seemed to work fine but now I'm checking I seem to get some
USB problems, e.g.:-


Connecting a DVD drive:-

[  169.960224] usb 1-3: reset high-speed USB device number 3 using ehci-pci
[  175.856556] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[  176.728448] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[  177.600419] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[  178.476415] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[  178.476650] usb 1-3: USB disconnect, device number 3

... and a USB stick:-

[  270.608424] usb 1-1: new high-speed USB device number 6 using ehci-pci
[  330.364418] usb 1-3: new high-speed USB device number 7 using ehci-pci
[  335.500517] usb 1-3: device descriptor read/64, error -110
[  350.776202] usb 1-3: device descriptor read/64, error -110
[  350.992298] usb 1-3: new high-speed USB device number 8 using ehci-pci
[  356.124251] usb 1-3: device descriptor read/64, error -110
[  371.400402] usb 1-3: device descriptor read/64, error -110
[  371.616398] usb 1-3: new high-speed USB device number 9 using ehci-pci
[  382.064393] usb 1-3: device not accepting address 9, error -110
[  382.176399] usb 1-3: new high-speed USB device number 10 using ehci-pci
[  392.624416] usb 1-3: device not accepting address 10, error -110
[  392.624579] usb usb1-port3: unable to enumerate USB device
[  392.876404] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[  393.134647] usb 3-1: not running at top speed; connect to a high speed hub
[  393.255666] usb 3-1: New USB device found, idVendor=0951, idProduct=1666
[  393.255690] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  393.255704] usb 3-1: Product: DataTraveler 3.0
[  393.255716] usb 3-1: Manufacturer: Kingston
[  393.255727] usb 3-1: SerialNumber: 08606E694934BF90770506D1
[  393.270660] usb-storage 3-1:1.0: USB Mass Storage device detected
[  393.271556] scsi host3: usb-storage 3-1:1.0
[  394.361887] scsi 3:0:0:0: Direct-Access     Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6
[  394.368273] sd 3:0:0:0: Attached scsi generic sg1 type 0
[  395.253856] sd 3:0:0:0: [sdb] 15364416 512-byte logical blocks: (7.87 GB/7.33 GiB)
[  395.256697] sd 3:0:0:0: [sdb] Write Protect is off
[  395.256718] sd 3:0:0:0: [sdb] Mode Sense: 23 00 00 00
[  395.259559] sd 3:0:0:0: [sdb] No Caching mode page found
[  395.259588] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[  395.307044]  sdb: sdb1
[  395.323546] sd 3:0:0:0: [sdb] Attached SCSI removable disk


Does that look like some sort of USB flakiness or is it an incompatibility of some sort? 


-- 
Chris Green