From: "Uwe Kleine-König" <uwe@kleine-koenig.org>
To: Lenny Szubowicz <lszubowi@redhat.com>, Joerg Roedel <jroedel@suse.de>
Cc: linux-kernel@vger.kernel.org, rafael.j.wysocki@intel.com,
tglx@linutronix.de, x86@kernel.org,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: Failure to shutdown/reboot with intel_iommu=on
Date: Mon, 11 May 2020 21:58:10 +0200 [thread overview]
Message-ID: <638e7da2-b61c-6636-a030-b8737bc12347@kleine-koenig.org> (raw)
In-Reply-To: <ff5eb4e2-89a3-57a5-c6d6-42bf743e5d16@redhat.com>
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Hello Lenny,
On 5/11/20 3:43 PM, Lenny Szubowicz wrote:
> I suspect that you have TPM 2.x functionality enabled in the BIOS/firmware.
Indeed.
> Unless you are actually using the TPM, try setting it to TPM 1.2 mode.
> I've seen an incompatiblity on other Lenovo laptops between using the
> IOMMU, TPM 2.x implementation in firmware, and shutdown/suspend.
When setting it to TPM 1.2 reboot works again. Didn't test poweroff and
suspend/resume yet.
Best regards
Uwe
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next prev parent reply other threads:[~2020-05-11 19:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-06 14:46 Failure to shutdown/reboot with intel_iommu=on Uwe Kleine-König
2020-05-08 15:07 ` Joerg Roedel
2020-05-09 1:58 ` Lu Baolu
2020-05-11 19:59 ` Uwe Kleine-König
2020-05-11 20:16 ` Uwe Kleine-König
2020-05-11 13:43 ` Lenny Szubowicz
2020-05-11 19:58 ` Uwe Kleine-König [this message]
2020-05-12 13:34 ` Joerg Roedel
2020-05-12 20:00 ` Lenny Szubowicz
2020-05-12 21:13 ` Joerg Roedel
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