System stall on Supermicro SKL boards on drm-tip
Submitted by Dmitry Ermilov
Assigned to Imre Deak @ideak
Link to original bug (#105949)
Description
Created attachment 138696
dmesg_drm-tip_4.16.0-rc7+
It occurs that Supermicro boards can't be booted using drm-tip.
We see the issue on specifically this hardware:
- Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0c 10/06/2017
- video card device ID 0x191d
OS:
CentOS 7 (7.4), kernel updated to drm-tip taken last week @ this revision:
commit 29940f138482ff38047287ad288cea1fcf1f73b4
Author: Oleksandr Andrushchenko
Date: Tue Apr 3 16:24:20 2018 +0300
drm-tip: 2018y-04m-03d-13h-23m-36s UTC integration manifest
An important note:
The systems can be loaded with additional parameters:
"intel_pstate=disable intel_idle.max_cstate=1"
however we see warnings from i915:
[ 2.978031] [drm:skl_set_cdclk [i915]] *ERROR* DPLL0 not locked
[ 2.991381] WARNING: CPU: 7 PID: 312 at drivers/gpu/drm/i915/intel_cdclk.c:826 skl_get_cdclk+0x228/0x260 [i915]
[ 3.004969] Modules linked in: i915(+) uas usb_storage sd_mod drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm igb ahci libahci libata dca crc32c_intel i2c_algo_bit i2c_core video
[ 3.034581] RIP: 0010:skl_get_cdclk+0x228/0x260 [i915]
[ 3.131641] intel_update_cdclk+0x1c/0x60 [i915]
[ 3.139084] skl_init_cdclk+0xe2/0x1c0 [i915]
[ 3.146531] intel_power_domains_init_hw+0x70c/0x9a0 [i915]
[ 3.153976] i915_driver_load+0x455/0xf20 [i915]
[ 3.374369] WARNING: CPU: 7 PID: 312 at drivers/gpu/drm/i915/intel_cdclk.c:826 skl_get_cdclk+0x228/0x260 [i915]
[ 3.399330] WARNING: CPU: 7 PID: 312 at drivers/gpu/drm/i915/intel_cdclk.c:826 skl_get_cdclk+0x228/0x260 [i915]
[ 3.411999] Modules linked in: i915(+) uas usb_storage sd_mod drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm igb ahci libahci libata dca crc32c_intel i2c_algo_bit i2c_core video
[ 3.439025] RIP: 0010:skl_get_cdclk+0x228/0x260 [i915]
[ 3.531009] gen9_dc_off_power_well_enable+0x52/0x210 [i915]
[ 3.538334] intel_power_well_enable+0x36/0x40 [i915]
[ 3.545707] __intel_display_power_get_domain+0x7c/0x90 [i915]
[ 3.553179] intel_display_power_get+0x2e/0x40 [i915]
[ 3.560683] intel_display_set_init_power+0x33/0x40 [i915]
[ 3.568215] intel_power_domains_init_hw+0x6e/0x9a0 [i915]
[ 3.575766] i915_driver_load+0x455/0xf20 [i915]
[ 3.799758] WARNING: CPU: 7 PID: 312 at drivers/gpu/drm/i915/intel_cdclk.c:826 skl_get_cdclk+0x228/0x260 [i915]
[ 3.818843] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)
[ 4.122568] [drm] Initialized i915 1.6.0 20180308 for 0000:00:02.0 on minor 0
**Attachment 138696**, "dmesg_drm-tip_4.16.0-rc7+":
dmesg_drm-tip_4.16.0-rc7+