<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Mar 7, 2014 at 1:51 PM, David King <span dir="ltr"><<a href="mailto:linuxman@avoura.com" target="_blank">linuxman@avoura.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFCC">
<font size="4"><font face=""Myriad Roman", Myriad,
"Myriad Apple", Arial, Helvetica, sans-serif">I am ru</font></font>nning
Ubuntu Studio 12.04 on my PC which I built myself. I recently
upgraded some of the hardware, including the CPU, RAM and
motherboard. I am using the same hard drives and the same
installation of Ubuntu Studio.<br>
<br>
When I boot up and if I press ESC during the splash text to see what
is going on (such as when it is doing disk checks), I see a
constantly-repeated error message as follows:<br>
<br>
[first some changing numbers] hub 2-0:1.0: unable to enumerate USB
device on port 2<br>
<br>
and the same line appears below but the first number is 5 instead of
2, i.e. hub 5-0:1.0:<br>
<br>
Today I am finding after logging into Ubuntu, that Firefox is
working okay and then suddenly it freezes when opening a new tab,
and then the whole PC goes very slow and is unresponsive. Pressing
ALT SysRq REISUB does nothing. Other programs were running as well,
and when it happens the RAM usage goes to maximum (8 GB installed)
and the CPUs get busier (8-core 4 GHz).<br>
The first time it happened I had to do a hard reboot.<br>
The second time it happened the PC was still responding, but only
just. I pressed CTRL ALT F1 to get into a console, but that was
showing the hub 2-0:1.0: unable to enumerate USB device on port 2
message again repeatedly, making it impossible to log in.<br>
Going back to the GUI via CTRL ALT F7 I then managed to close each
window and reboot.<br>
<br>
So is the USB device error something that could be causing it to go
slow? Or is it more likely to be a problem with Firefox or one of
its extensions? Or a problem with Ubuntu Studio? I plan to upgrade
the new LTS when it comes out in April or whenever.<br>
<br>
When everything works it works well, with the faster CPU than before
it never goes slow, normally. I can have various programs open and
lots of tabs open in Firefox and it handles it smoothly.<br>
<br>
So how do I fix this, and get rid of that USB device error and with
the PC running normally without freezing?<span class="HOEnZb"><font color="#888888"><br>
<br></font></span></div></blockquote><div><br></div><div>the USB messages are likely just that.. messages.. what would i do? try a live CD and remove my currently installed system from the equation. i would test the hardware and see that its all installed and functioning properly. an opportune time to find issues with hardware is when it is new, or very old, or being physically manipulated. you could have something as simple as a graphics card driver issue, to hardware that doesnt support the kernel you are using.. or, you could have broken something hardware related. remove your installation from the equation.. see if live CD's run, then, move on to modules you may have installed on the old hardware that should be removed.. graphics drivers for example.. cheers and good luck</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div text="#000000" bgcolor="#FFFFCC"><span class="HOEnZb"><font color="#888888">
<br>
David King<br>
<br>
<br>
</font></span></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">MH<div><br><a href="http://likethecow.com" target="_blank">likethecow.com</a></div><div><br></div></div>
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