Public bug reported:
This problem is reproducible on the IBM ThinkPad T22:
http://www-307.ibm.com/pc/support/site.wss/product.do?template=/product.do?template=%2Fproductpage%2Flandingpages%2FproductPageLandingPage.vm&sitestyle=lenovo&brandind=10&familyind=50305&machineind=82753&modelind=89104&partnumberind=0&subcategoryind=0&doctypeind=100&doccategoryind=0&operatingsystemind=49979&validate=true
It was also reproducible on the ThinkPad T21, but I do not know exactly
which model number.
After a clean install of Ubuntu, when I click "Shut down" or "Restart",
Ubuntu shuts down the operating system and turns off the monitor, but
the power light stays on. "Restart" behaves exactly like "Shut down". I
have to hold down the power button for about 5 seconds to turn off the
motherboard.
Interestingly, if I boot up Ubuntu recovery mode and type "reboot" at
the prompt, it works perfectly. In other words, the problem only occurs
in GUI mode.
This is a significant downside to using Ubuntu on ThinkPads - please fix
it so that more people will be willing to use Ubuntu.
** Affects: ubuntu
Importance: Undecided
Status: New
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Ubuntu won't power off IBM Thinkpad T22
https://bugs.launchpad.net/bugs/186056
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