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Last reply by 07-08-2020 Unsolved
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XPS 9300 BIOS 1.0.7 Problem - System does not poweroff

I am running Fedora 31 (kernel 5.6.4-300.fc31.x86_64) on a Dell XPS 9300 with BIOS version 1.0.7.

When I attempt to poweroff the system, the console outputs that it is powering off the system and the console goes blank but the display backlight, keyboard backlight, and fans remain on and the system never actually turns off. I have to hold the power button for 5 seconds to turn off the system. This also occurs when rebooting the system.

On BIOS version 1.0.6 this does not occur and the system actually turns off.

Does anyone know how I can get this feedback to the appropriate team at Dell?

Replies (10)

To anyone encountering this, at this point it looks like a kernel regression in kernel 5.5.  This particular issue is popping up in Fedora because moves more rapidly to newer kernel versions.

 

The upstream kernel bug report is here: 

https://bugzilla.kernel.org/show_bug.cgi?id=206571

And you can find a Fedora specific bug report here:

https://bugzilla.redhat.com/show_bug.cgi?id=1834277

The commit that caused this problem is here:

https://github.com/torvalds/linux/commit/6c3a44ed3c553c324845744f30bcd1d3b07d61fd

 

Until the problem has been fixed in the upstream kernel and Fedora's kernel for a workaround you can turn off "VT-d" in BIOS setup.  This is not a permanent solution as by doing so you will turn off DMA attack mitigations such as those discussed in public vulnerabilities like Thunderspy.   The permanent solution will need to be discussed upstream.

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