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Message #86152
[Bug 1468539] [NEW] DMAR Fault on Intel Wireless 7265 (iwlwifi) when Linux "intel_iommu=on" Kernel Boot Parameter Is used on Asus UX303LNB.206
Public bug reported:
On Asus UX303LNB.206 running Ubuntu 14.04 LTS with "intel_iommu=on" added to the Linux kernel boot parameters, DMAR fault messages are logged in dmesg:
...
[ 18.611067] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f1000
[ 18.611067] DMAR:[fault reason 23] Unknown
[ 18.611069] dmar: DRHD: handling fault status reg 2
[ 18.611071] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f4000
[ 18.611071] DMAR:[fault reason 23] Unknown
[ 18.611073] dmar: DRHD: handling fault status reg 2
[ 18.611076] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f7000
[ 18.611076] DMAR:[fault reason 23] Unknown
[ 18.611079] dmar: DRHD: handling fault status reg 2
[ 18.611081] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f9000
[ 18.611081] DMAR:[fault reason 23] Unknown
[ 18.611083] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1fa000
[ 18.611083] DMAR:[fault reason 23] Unknown
[ 18.611087] dmar: DRHD: handling fault status reg 2
[ 18.611088] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1fd000
[ 18.611088] DMAR:[fault reason 23] Unknown
[ 24.807264] [drm] stuck on render ring
[ 24.808030] [drm] GPU HANG: ecode 8:0:0x00f7ffe1, in Xorg [1499], reason: Ring hung, action: reset
[ 24.808032] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[ 24.808033] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[ 24.808034] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[ 24.808035] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[ 24.808036] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 24.815267] drm/i915: Resetting chip after gpu hang
[ 24.818413] dmar: DRHD: handling fault status reg 2
[ 24.818420] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr 468a000
[ 24.818420] DMAR:[fault reason 23] Unknown
[ 30.810311] [drm] stuck on render ring
[ 30.811007] [drm] GPU HANG: ecode 8:0:0xc0dfffff, in Xorg [1499], reason: Ring hung, action: reset
[ 30.811098] [drm:i915_set_reset_status.part.38 [i915]] *ERROR* gpu hanging too fast, banning!
[ 30.818281] drm/i915: Resetting chip after gpu hang
** Affects: apport (Ubuntu)
Importance: Undecided
Status: New
** Tags: dmar i915 iommu iwlwifi
--
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https://bugs.launchpad.net/bugs/1468539
Title:
DMAR Fault on Intel Wireless 7265 (iwlwifi) when Linux
"intel_iommu=on" Kernel Boot Parameter Is used on Asus UX303LNB.206
Status in apport package in Ubuntu:
New
Bug description:
On Asus UX303LNB.206 running Ubuntu 14.04 LTS with "intel_iommu=on" added to the Linux kernel boot parameters, DMAR fault messages are logged in dmesg:
...
[ 18.611067] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f1000
[ 18.611067] DMAR:[fault reason 23] Unknown
[ 18.611069] dmar: DRHD: handling fault status reg 2
[ 18.611071] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f4000
[ 18.611071] DMAR:[fault reason 23] Unknown
[ 18.611073] dmar: DRHD: handling fault status reg 2
[ 18.611076] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f7000
[ 18.611076] DMAR:[fault reason 23] Unknown
[ 18.611079] dmar: DRHD: handling fault status reg 2
[ 18.611081] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1f9000
[ 18.611081] DMAR:[fault reason 23] Unknown
[ 18.611083] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1fa000
[ 18.611083] DMAR:[fault reason 23] Unknown
[ 18.611087] dmar: DRHD: handling fault status reg 2
[ 18.611088] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr bb1fd000
[ 18.611088] DMAR:[fault reason 23] Unknown
[ 24.807264] [drm] stuck on render ring
[ 24.808030] [drm] GPU HANG: ecode 8:0:0x00f7ffe1, in Xorg [1499], reason: Ring hung, action: reset
[ 24.808032] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[ 24.808033] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[ 24.808034] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[ 24.808035] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[ 24.808036] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 24.815267] drm/i915: Resetting chip after gpu hang
[ 24.818413] dmar: DRHD: handling fault status reg 2
[ 24.818420] dmar: DMAR:[DMA Write] Request device [00:02.0] fault addr 468a000
[ 24.818420] DMAR:[fault reason 23] Unknown
[ 30.810311] [drm] stuck on render ring
[ 30.811007] [drm] GPU HANG: ecode 8:0:0xc0dfffff, in Xorg [1499], reason: Ring hung, action: reset
[ 30.811098] [drm:i915_set_reset_status.part.38 [i915]] *ERROR* gpu hanging too fast, banning!
[ 30.818281] drm/i915: Resetting chip after gpu hang
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