[Bug 106423] New: [BAT] guc_fw_xfer error with i915.enable_guc=2 kernel mode parameter

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106423

            Bug ID: 106423
           Summary: [BAT] guc_fw_xfer error with i915.enable_guc=2 kernel
                    mode parameter
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: ryanboehning at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 139398
  --> https://bugs.freedesktop.org/attachment.cgi?id=139398&action=edit
full dmesg logs

CPU: Coffee Lake 8700K
Mobo: ASUS Z370-G STRIX
Distro: Arch
Kernel: 4.16.6-1-ARCH

The GuC firmware loads fine when I use the i915.enable_guc=1 kernel mode
setting, but when I try to enable HuC loading with i915.enable_guc=2 I get a
guc_fw_xfer error during boot. My system boots but my display output is blank.

Here's the relevant excerpt from the boot logs (full dmesg log attached).

kernel: [drm:intel_uc_fw_upload [i915]] HuC fw load
i915/kbl_huc_ver02_00_1810.bin
kernel: [drm:intel_uc_fw_upload [i915]] HuC fw load PENDING
kernel: [drm:huc_ucode_xfer [i915]] HuC DMA transfer wait over with ret 0
kernel: [drm:intel_uc_fw_upload [i915]] HuC fw load SUCCESS
kernel: [drm] HuC: Loaded firmware i915/kbl_huc_ver02_00_1810.bin (version 2.0)
kernel: [drm:intel_uc_fw_upload [i915]] GuC fw load i915/kbl_guc_ver9_39.bin
kernel: [drm:intel_uc_fw_upload [i915]] GuC fw load PENDING
kernel: [drm:guc_fw_xfer [i915]] GuC DMA status 0x10
kernel: [drm:guc_fw_xfer [i915]] GuC status 0x800470ec
kernel: [drm:guc_fw_xfer [i915]] *ERROR* GuC firmware xfer error -110
kernel: [drm:intel_uc_fw_upload [i915]] GuC fw load FAIL
kernel: [drm] GuC: Failed to load firmware i915/kbl_guc_ver9_39.bin (error
-110)
kernel: i915 0000:00:02.0: GuC initialization failed -110
kernel: [drm:guc_fw_xfer [i915]] *ERROR* GuC firmware xfer error -110
kernel: [drm:intel_uc_fw_upload [i915]] GuC fw load FAIL
kernel: [drm] GuC: Failed to load firmware i915/kbl_guc_ver9_39.bin (error
-110)
kernel: i915 0000:00:02.0: GuC initialization failed -110
kernel: [drm:drm_irq_uninstall [drm]] irq=123
kernel: [drm:intel_power_well_enable [i915]] enabling DDI A/E IO power well
kernel: [drm:intel_power_well_enable [i915]] enabling DDI C IO power well
kernel: [drm:intel_power_well_enable [i915]] enabling DDI D IO power well
kernel: i915 0000:00:02.0: [drm:i915_driver_load [i915]] Device initialization
failed (-110)
kernel: i915 0000:00:02.0: Please file a bug at
https://bugs.freedesktop.org/enter_bug.cgi?product=DRI against DRM/Intel
providing the dmesg log by booting with drm.debug=0xf
kernel: i915: probe of 0000:00:02.0 failed with error -110

I'm using the latest Arch package for linux-firmware (linux-firmware
20180416.b562d2f-1) and the latest Arch kernel.

This is my first bug report so sorry if it's not right.

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