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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [KVMR][drm:skl_set_power_well] *ERROR* power well 2 disable timeout"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98564#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [KVMR][drm:skl_set_power_well] *ERROR* power well 2 disable timeout"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98564">bug 98564</a>
from <span class="vcard"><a class="email" href="mailto:jason@zx2c4.com" title="Jason A. Donenfeld <jason@zx2c4.com>"> <span class="fn">Jason A. Donenfeld</span></a>
</span></b>
<pre>While it was said that 4.11 would fix this error, after installing 4.11 and
rebooting into it, I see this in dmesg:
[ 0.661407] ------------[ cut here ]------------
[ 0.661413] WARNING: CPU: 2 PID: 1 at
drivers/gpu/drm/i915/intel_runtime_pm.c:720 skl_set_power_well+0x5b8/0x5d0
[ 0.661416] Clearing unexpected KVMR request for power well 2
[ 0.661418] Modules linked in:
[ 0.661421] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.11.0-gentoo #1
[ 0.661423] Hardware name: LENOVO 20ENCTO1WW/20ENCTO1WW, BIOS N1EET65W (1.38
) 02/09/2017
[ 0.661426] Call Trace:
[ 0.661429] ? dump_stack+0x46/0x5e
[ 0.661433] ? __warn+0xb9/0xe0
[ 0.661436] ? warn_slowpath_fmt+0x46/0x50
[ 0.661439] ? fwtable_read32+0x7e/0x1b0
[ 0.661442] ? skl_set_power_well+0x5b8/0x5d0
[ 0.661444] ? intel_display_power_put+0xca/0x140
[ 0.661447] ? intel_display_set_init_power+0x1f/0x30
[ 0.661456] ? intel_modeset_setup_hw_state+0xafd/0xce0
[ 0.661458] ? fwtable_read8+0x1b0/0x1b0
[ 0.661461] ? intel_modeset_init+0xdbe/0x1830
[ 0.661464] ? intel_i2c_reset+0x39/0x40
[ 0.661467] ? intel_setup_gmbus+0x2e4/0x300
[ 0.661470] ? i915_driver_load+0x938/0x1430
[ 0.661473] ? local_pci_probe+0x38/0x90
[ 0.661476] ? pci_device_probe+0xd4/0x130
[ 0.661479] ? driver_probe_device+0x1ef/0x2d0
[ 0.661482] ? __driver_attach+0x8f/0xa0
[ 0.661485] ? driver_probe_device+0x2d0/0x2d0
[ 0.661487] ? bus_for_each_dev+0x55/0x90
[ 0.661490] ? bus_add_driver+0x115/0x210
[ 0.661493] ? set_debug_rodata+0xc/0xc
[ 0.661496] ? driver_register+0x52/0xc0
[ 0.661499] ? mipi_dsi_bus_init+0xc/0xc
[ 0.661502] ? do_one_initcall+0x39/0x160
[ 0.661505] ? set_debug_rodata+0xc/0xc
[ 0.661508] ? set_debug_rodata+0xc/0xc
[ 0.661511] ? kernel_init_freeable+0x158/0x1d4
[ 0.661514] ? rest_init+0x70/0x70
[ 0.661516] ? kernel_init+0x5/0xf0
[ 0.661518] ? ret_from_fork+0x23/0x30
[ 0.661522] ---[ end trace 72d34686d3e43b95 ]---
[ 0.665751] [drm:skl_set_power_well] *ERROR* power well 2 disable timeout</pre>
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