Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Andrew Morton]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Thu,  1 Jan 2009 00:52:59 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=12340
> 
>            Summary: [regression] USB keyboard no longer recognised
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.28
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: USB
>         AssignedTo: greg@kroah.com
>         ReportedBy: nm127@freemail.hu
> 
> 
> Latest working kernel version: 2.6.27
> Earliest failing kernel version: 2.6.28
> Distribution: 
> Hardware Environment: ASUS Eee PC 901
> Software Environment:
> Problem Description:
> 
> The USB keyboard was recognised an working with kernel 2.6.27 but not working
> with 2.6.28.
> 
> Steps to reproduce:
> 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
> bash"
> 2. modprobe -k uhci_hcd
> 3. modprobe -k usbhid
> 
> Current result in case of 2.6.27: USB keyboard starts to work
> Current result in case of 2.6.28: USB keyboard does not work
> 

Is it input/HID, or USB?

Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Németh Márton]

Andrew Morton wrote:
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
> 
> On Thu,  1 Jan 2009 00:52:59 -0800 (PST) bugme-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org wrote:
> 
>> http://bugzilla.kernel.org/show_bug.cgi?id=12340
>>
>>            Summary: [regression] USB keyboard no longer recognised
>>            Product: Drivers
>>            Version: 2.5
>>      KernelVersion: 2.6.28
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: USB
>>         AssignedTo: greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org
>>         ReportedBy: nm127-Y8qEzhMunLyT9ig0jae3mg@public.gmane.org
>>
>>
>> Latest working kernel version: 2.6.27
>> Earliest failing kernel version: 2.6.28
>> Distribution: 
>> Hardware Environment: ASUS Eee PC 901
>> Software Environment:
>> Problem Description:
>>
>> The USB keyboard was recognised an working with kernel 2.6.27 but not working
>> with 2.6.28.
>>
>> Steps to reproduce:
>> 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
>> bash"
>> 2. modprobe -k uhci_hcd
>> 3. modprobe -k usbhid
>>
>> Current result in case of 2.6.27: USB keyboard starts to work
>> Current result in case of 2.6.28: USB keyboard does not work
>>
> 
> Is it input/HID, or USB?

The same USB keyboard is working correctly with Clevo D410J laptop with 2.6.28,
so I guess it might be an USB problem.
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Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Oliver Neukum]

Am Donnerstag, 1. Januar 2009 10:12:23 schrieb Andrew Morton:

> > Steps to reproduce:
> > 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
> > bash"
> > 2. modprobe -k uhci_hcd
> > 3. modprobe -k usbhid
> > 
> > Current result in case of 2.6.27: USB keyboard starts to work
> > Current result in case of 2.6.28: USB keyboard does not work
> > 
> 
> Is it input/HID, or USB?

Dmesg shows no errors. Please post /proc/bus/usb/devices of 2.6.28
(usbfs must be mounted)

	Regards
		Oliver

Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Alan Stern]

On Thu, 1 Jan 2009, Németh Márton wrote:

> >> Current result in case of 2.6.27: USB keyboard starts to work
> >> Current result in case of 2.6.28: USB keyboard does not work
> >>
> > 
> > Is it input/HID, or USB?
> 
> The same USB keyboard is working correctly with Clevo D410J laptop with 2.6.28,
> so I guess it might be an USB problem.

The dmesg logs clearly show that it is an HID problem.  In 2.6.27 the 
device is registered with the input layer as a keyboard, but in 2.6.28 
it isn't.

Perhaps a usbmon trace would help (see Documentation/usb/usbmon.txt).

Alan Stern

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Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Jiri Kosina]

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On Thu, 1 Jan 2009, Németh Márton wrote:

> >> Steps to reproduce:
> >> 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
> >> bash"
> >> 2. modprobe -k uhci_hcd
> >> 3. modprobe -k usbhid
> >> Current result in case of 2.6.27: USB keyboard starts to work
> >> Current result in case of 2.6.28: USB keyboard does not work
> > Is it input/HID, or USB?
> The same USB keyboard is working correctly with Clevo D410J laptop with 2.6.28,
> so I guess it might be an USB problem.

Why are you doing the modprobe by hand? Doesn't the module get autoloaded 
properly?

Anyway, in 2.6.28, this keyboard is driven by specialized 'hid-bright' 
driver. Does modprobing it by hand fix the problem?

-- 
Jiri Kosina
SUSE Labs

Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Németh Márton]

Jiri Kosina wrote:
> On Thu, 1 Jan 2009, Németh Márton wrote:
> 
>>>> Steps to reproduce:
>>>> 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
>>>> bash"
>>>> 2. modprobe -k uhci_hcd
>>>> 3. modprobe -k usbhid
>>>> Current result in case of 2.6.27: USB keyboard starts to work
>>>> Current result in case of 2.6.28: USB keyboard does not work
>>> Is it input/HID, or USB?
>> The same USB keyboard is working correctly with Clevo D410J laptop with 2.6.28,
>> so I guess it might be an USB problem.
> 
> Why are you doing the modprobe by hand? Doesn't the module get autoloaded 
> properly?

The modules were not autoloaded. This is a minimal test environment with only
a few binaries in the root directory. Is the "modprobe" binary enough for
autoloading?

> Anyway, in 2.6.28, this keyboard is driven by specialized 'hid-bright' 
> driver. Does modprobing it by hand fix the problem?

I'll try the hid-bright module as soon as my laptop gets repaired.
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Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Németh Márton]

Németh Márton wrote:
> Jiri Kosina wrote:
>> On Thu, 1 Jan 2009, Németh Márton wrote:
>>
>>>>> Steps to reproduce:
>>>>> 1. boot kernel with parameters "rw root=/dev/sdb1 log_buf_len=1M init=/bin/
>>>>> bash"
>>>>> 2. modprobe -k uhci_hcd
>>>>> 3. modprobe -k usbhid
>>>>> Current result in case of 2.6.27: USB keyboard starts to work
>>>>> Current result in case of 2.6.28: USB keyboard does not work
>>>> Is it input/HID, or USB?
>>> The same USB keyboard is working correctly with Clevo D410J laptop with 2.6.28,
>>> so I guess it might be an USB problem.
>> Why are you doing the modprobe by hand? Doesn't the module get autoloaded 
>> properly?
> 
> The modules were not autoloaded. This is a minimal test environment with only
> a few binaries in the root directory. Is the "modprobe" binary enough for
> autoloading?

I just was able to try the situation: the modules are not autoloaded.

>> Anyway, in 2.6.28, this keyboard is driven by specialized 'hid-bright' 
>> driver. Does modprobing it by hand fix the problem?
> 
> I'll try the hid-bright module as soon as my laptop gets repaired.

Loading the hid-bright module handles the USB keyboard properly.
But it is still not clear for me why this module is not autoloaded?

Regards,

	Márton Németh

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Re: [Bugme-new] [Bug 12340] New: [regression] USB keyboard no longer recognised

[Jiri Kosina]

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On Mon, 5 Jan 2009, Németh Márton wrote:

> > The modules were not autoloaded. This is a minimal test environment 
> > with only a few binaries in the root directory. Is the "modprobe" 
> > binary enough for autoloading?
> I just was able to try the situation: the modules are not autoloaded.

Does autoloading of other modules work well in the limited environment you 
have? I suspect this might be something with your special configuration 
(udev not triggering properly, etc.) rather than kernel problem.

> >> Anyway, in 2.6.28, this keyboard is driven by specialized 'hid-bright' 
> >> driver. Does modprobing it by hand fix the problem?
> > I'll try the hid-bright module as soon as my laptop gets repaired.
> Loading the hid-bright module handles the USB keyboard properly.

Thanks for verifying.

-- 
Jiri Kosina
SUSE Labs