F28's "ImprovedLaptopBatteryLife" causing USB issues?

[Radka Janekova]

ref:
https://fedoraproject.org/wiki/Changes/ImprovedLaptopBatteryLife#Current_...
>  "Enable USB autosuspend for USB bluetooth receivers by default.
> If all 
other USB devices on the laptop also have USB auto-suspend enabled (which
typically is true) this saves aprox. 0.4 Watts of power on an idle laptop."

I believe that this option fails to actually re-enable USB until complete
reboot of a machine affected. Neither keyboard, nor mouse, nothing, no USBs
work after switching from power (dock) to battery, even after re-connecting
power.

The issue is observed since upgrading to F28 (non-gnome)

Is there anything I can look at to find out what is causing it, if it is
really due to the above mentioned power saving tweaks?


Thank you,
Radka

------------------------------
*Radka Janeková*
.NET Engineer, Red Hat
*radka.janek(a)redhat.com <radka.janek(a)redhat.com&gt;*
IRC: radka | Freenode: Rhea

[Hans de Goede]

Hi,

On 25-06-18 13:26, Radka Janekova wrote:
>  ref:
> https://fedoraproject.org/wiki/Changes/ImprovedLaptopBatteryLife#Current_...
>   > "Enable USB autosuspend for USB bluetooth receivers by default. If all other
> USB devices on the laptop also have USB auto-suspend enabled (which typically is true)
> this saves aprox. 0.4 Watts of power on an idle laptop."
>  
>  I believe that this option fails to actually re-enable USB until complete reboot of a
> machine affected. Neither keyboard, nor mouse, nothing, no USBs work after switching from
> power (dock) to battery, even after re-connecting power.
>  
>  The issue is observed since upgrading to F28 (non-gnome)
>  
>  Is there anything I can look at to find out what is causing it, if it is really due to
> the above mentioned power saving tweaks? 
F28 only enables auto-suspend on BlueTooth USB interfaces, all other USB devices are
left alone, so this seems unrelated.

Regards,

Hans

[Radka Janekova]

On Mon, Jun 25, 2018 at 2:29 PM, Hans de Goede <hdegoede(a)redhat.com&gt; wrote:

>  Hi,
>
>  On 25-06-18 13:26, Radka Janekova wrote:
>
> > ref: https://fedoraproject.org/wiki/Changes/ImprovedLaptopBattery
> > Life#Current_status
> >  > "Enable USB autosuspend for USB bluetooth receivers by default. If all
> > other USB devices on the laptop also have USB auto-suspend enabled (which
> > typically is true) this saves aprox. 0.4 Watts of power on an idle laptop."
> >
> > I believe that this option fails to actually re-enable USB until complete
> > reboot of a machine affected. Neither keyboard, nor mouse, nothing, no USBs
> > work after switching from power (dock) to battery, even after re-connecting
> > power.
> >
> > The issue is observed since upgrading to F28 (non-gnome)
> >
> > Is there anything I can look at to find out what is causing it, if it is
> > really due to the above mentioned power saving tweaks?
> >
>
>  F28 only enables auto-suspend on BlueTooth USB interfaces, all other USB
>  devices are
>  left alone, so this seems unrelated.
>  
Not exactly since it's happening only since the update and I don't know
what else it could be...
Further I do use a bluetooth keyboard that I am unable to connect anymore
(so i use it through synergy from windows machine...)


>  Regards,
>
>  Hans
>
>

[Hans de Goede]

Hi,

On 26-06-18 15:19, Radka Janekova wrote:
>  On Mon, Jun 25, 2018 at 2:29 PM, Hans de Goede
> <hdegoede(a)redhat.com <mailto:[e-mail]>>wrote:
>  
>      Hi,
>  
>      On 25-06-18 13:26, Radka Janekova wrote:
>  
>          ref:
> https://fedoraproject.org/wiki/Changes/ImprovedLaptopBatteryLife#Current_...
> <https://fedoraproject.org/wiki/Changes/ImprovedLaptopBatteryLife#Current_...
>            > "Enable USB autosuspend for USB bluetooth receivers by default. If
> all other USB devices on the laptop also have USB auto-suspend enabled (which typically is
> true) this saves aprox. 0.4 Watts of power on an idle laptop."
>  
>          I believe that this option fails to actually re-enable USB until complete reboot
> of a machine affected. Neither keyboard, nor mouse, nothing, no USBs work after switching
> from power (dock) to battery, even after re-connecting power.
>  
>          The issue is observed since upgrading to F28 (non-gnome)
>  
>          Is there anything I can look at to find out what is causing it, if it is really
> due to the above mentioned power saving tweaks?
>  
>  
>      F28 only enables auto-suspend on BlueTooth USB interfaces, all other USB devices are
>      left alone, so this seems unrelated.
>  
>  
>  Not exactly since it's happening only since the update and I don't know what else
> it could be...
>  Further I do use a bluetooth keyboard that I am unable to connect anymore (so i use it
> through synergy from windows machine...) 
In your original mail you say "no USBs work", that sounds like you've tested
other USB
devices and they all don't work.

Anyways you can try passing "btusb.enable_autosuspend=0" on the kernel
commandline,
that disables the USB BT autosuspend which we now do by default in F28.

Regards,

Hans