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On Sun, Jul 1, 2012 at 12:07 PM, Frank Peters <frank.peters@×××××××.net> wrote: |
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> On Sun, 1 Jul 2012 12:39:07 -0400 |
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> Frank Peters <frank.peters@×××××××.net> wrote: |
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> |
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>> |
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>> After configuring with the same .config file that I used for 3.4.0, |
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>> the new 3.4.4 kernel boots but it cannot read the USB keyboard. |
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>> Presumably the USB mouse is also affected. |
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>> |
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> |
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> The problem has been traced to a certain configuration parameter. |
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> |
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> In the "General setup" options for kernel .config file, there |
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> is an option called "Configure standard kernel features (expert users)." |
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> There is also an associated admonition: "Only use this if you really |
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> know what you are doing." |
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> |
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> Since the help descriptions for these options are fairly easy to understand |
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> I decided to manually set some of these options. For reasons that I |
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> can't understand this caused the USB problems. Setting this option |
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> to "No" fixed everything and now the kernel-3.4.4 works nicely. |
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> |
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> It would be beneficial if anyone who truly is an "expert" could comment |
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> on how setting these options could wreck the USB system. |
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|
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I am not an expert and don't know about your particular options that |
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were enabled/disabled, but on my laptop I had to ensure the USB |
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modules were loaded in a certain order. In my case my laptop supports |
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EHCI and UHCI, but I had to set EHCI as built-in and UHCI as module |
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(or I probably could have just blacklisted UHCI). Basically, if UHCI |
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got loaded first it would cause strangeness. |
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