Odp: Re: Problem: booting from Sandisk USB stick fails

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Dnia Czwartek, 7 Lipca 2016 01:08 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> napisał(a) 
> On Wed, Jul 06, 2016 at 08:00:55PM +0200, Ziutek Putek wrote:
> > [1.] Booting from Sandisk USB stick fails and stops on Dell Latitude E5420 Laptop.
> > 
> > [2.] On mainline kernel I get error:
> > [ 18.414128] usb 2-1.4: device descriptor read/64, error -110
> > [ 23.601028] usb 2-1.4: device descriptor read/64, error -71
> > [ 23.777126] usb 2-1.4: new high-speed USB device number 4 using ehci-pci
> > [ 23.861176] usb 2-1.4: device descriptor read/64, error -71
> > [ 24.049280] usb 2-1.4: device descriptor read/64, error -71
> > [ 24.225377] usb 2-1.4: new high-speed USB device number 5 using ehci-pci
> > [ 24.641614] usb 2-1.4: device not accepting address 5, error -71
> > [ 24.713649] usb 2-1.4: new high-speed USB device number 6 using ehci-pci
> > [ 25.129882] usb 2-1.4: device not accepting address 6, error -71
> > [ 25.131599] usb 2-1-port4: unable to enumerate USB device
> > 
> > however unpluging and repluging usb stick makes booting process go further.
> > 
> > On upstream kernel these errors do not show at all and the workaround with unplugging and repluging usb stick does not work.
> 
> What do you mean "upstream" and "mainline"?
> 
> Which version works?  Which version does not?
> 
> thanks,
> 
> greg k-h

Hello Greg,

Latest mainline tested: 4.4.0-28
Latest upstream tested: 4.7-rc1

Neither of them work ok.

On mainline workaround (unplugging usb stick and plugging it again) works.
On upstream workaround does not work.

Regards
Darek



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