[Bug 98930] WARN_ON backtraces on every boot on Acer Aspire One ZG5 32-bit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98930

--- Comment #1 from Nemo Inis <nemoinis at hotmail.com> ---
I've got the same issue on a HP Mini 110 running kernel 4.9.0-2-686-pae (Debian
Stretch).
kernel: 4.9.0-2-686-pae #1 SMP Debian 4.9.13-1 (2017-02-27) i686 GNU/Linux
-----------

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GSE Express
Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
        Subsystem: Hewlett-Packard Company Mobile 945GSE Express Integrated
Graphics Controller
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at fe980000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at dc80 [size=8]
        Memory at d0000000 (32-bit, prefetchable) [size=256M]
        Memory at fe940000 (32-bit, non-prefetchable) [size=256K]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
        Subsystem: Hewlett-Packard Company Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller
        Flags: bus master, fast devsel, latency 0
        Memory at fe880000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: <access denied>

-----------
WARNING: CPU: 1 PID: 6 at
/build/linux-GCI9oD/linux-4.9.13/drivers/gpu/drm/i915/i
WARN_ON(!connector->state->crtc)
Modules linked in:
 mac80211 snd_hda_codec_idt i915 snd_hda_codec_generic pcspkr snd_hda_intel
joyde
CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.9.0-2-686-pae #1 Debian 4.9.13-1
Hardware name: Hewlett-Packard HP Mini 110-1000/308F, BIOS 308F0 Ver. F.19
01/12/
Workqueue: events_unbound async_run_entry_fn
 f7517d44 cf2f0f52 f7517d58 00000000 cf066b2a f8e76a6b f7517d78 00000006
 f8e6a048 0000019e f8e1a3fc 0000019e 00000009 f8e1a3fc 00000001 f768f000
 00000000 f7517d64 cf066b96 00000009 00000000 f7517d58 f8e76a6b f7517d78
Call Trace:
 [<cf2f0f52>] ? dump_stack+0x55/0x73
 [<cf066b2a>] ? __warn+0xea/0x110
 [<f8e1a3fc>] ? intel_fb_initial_config+0x3fc/0x5f0 [i915]
 [<f8e1a3fc>] ? intel_fb_initial_config+0x3fc/0x5f0 [i915]
 [<cf066b96>] ? warn_slowpath_fmt+0x46/0x60
 [<f8e1a3fc>] ? intel_fb_initial_config+0x3fc/0x5f0 [i915]
 [<cf1bbe70>] ? __kmalloc+0xc0/0x4f0
 [<f8dd7c10>] ? gen2_write16+0x120/0x120 [i915]
 [<f8e1a000>] ? intelfb_create+0x4d0/0x4d0 [i915]
 [<f8aa85b3>] ? drm_setup_crtcs+0x1a3/0x940 [drm_kms_helper]
 [<cf08f135>] ? try_to_wake_up+0x45/0x360
 [<cf08f49e>] ? wake_up_q+0x2e/0x60
 [<f8aa903c>] ? drm_fb_helper_initial_config+0xbc/0x410 [drm_kms_helper]
 [<cf0a2cf0>] ? pick_next_task_fair+0x490/0x520
 [<f8e1abe6>] ? intel_fbdev_initial_config+0x16/0x30 [i915]
 [<cf086e85>] ? async_run_entry_fn+0x35/0x170
 [<cf07eb31>] ? process_one_work+0x141/0x380
 [<cf07edb1>] ? worker_thread+0x41/0x460
 [<cf07ed70>] ? process_one_work+0x380/0x380
 [<cf084057>] ? kthread+0xa7/0xc0
 [<cf083fb0>] ? kthread_park+0x50/0x50
 [<cf59ec43>] ? ret_from_fork+0x1b/0x28
---[ end trace 9f2112909399e665 ]---

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