Re: RTL8192EE PCIe Wireless Network Adapter crashed with linux-4.13

From: Kalle Valo
Date: Thu Sep 21 2017 - 10:50:05 EST


Larry Finger <Larry.Finger@xxxxxxxxxxxx> writes:

> On 09/21/2017 06:37 AM, Zwindl wrote:
>> Hi, I've reported to archlinux's bugzilla, and finally found out the
>> flag which caused that issue, it's the
>> `CONFIG_INTEL_IOMMU_DEFAULT_ON=y` flag, I think may this is a kernel
>> bug, more details at https://bugs.archlinux.org/task/55665
>
> My standard kernel has the following:
>
> CONFIG_INTEL_IOMMU=y
> # CONFIG_INTEL_IOMMU_SVM is not set
> # CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
>
> I will do some further testing to see if turning
> CONFIG_INTEL_IOMMU_DEFAULT_ON also breaks my system.

But not all systems have iommu so check from dmesg that iommu is really
enabled.

--
Kalle Valo