[Bug 73951] [Bay Trail-I HPD] Hot plug detection doesn't work with Display Port
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Jan 27 00:25:17 PST 2014
https://bugs.freedesktop.org/show_bug.cgi?id=73951
--- Comment #14 from Kenta Ueda <kenta.ueda at intel.com> ---
I tried commit 232a6ee9af8adb185640f67fcaaa9014a9aa0573 kernel, but my system
was frozen in login screen (CUI mode).
So, I tried 3.13.0-5-generic (Ubuntu 14.04 default kernel) kernel + commit
232a6ee9af8adb185640f67fcaaa9014a9aa0573 patch kernel.
HPD works with 3.13.0-5 + hotplug patch. But system doesn't show any picture
for DP monitor.
I found similar issue (bug#73477).
Here is the dmesg output. I attach all dmesg output. Thanks.
[ 44.490952] ------------[ cut here ]------------$
[ 44.490990] WARNING: CPU: 0 PID: 57 at
/build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_display.c:1508
vlv_wait_port_ready+0x104/0x110 [i915]()$
[ 44.491000] timed out waiting for port C ready: 0xf000a0ff$
[ 44.491003] Modules linked in: intel_rapl coretemp kvm_intel kvm
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helper cryptd microcode psmouse i915
serio_raw joydev drm_kms_helper dw_dmac_pci drm dw_dmac_core i2c_algo_bit
parport_pc ppdev bnep rfcomm bluetooth binfmt_misc nls_iso8859_1 video mac_hid
lp parport hid_logitech ff_memless e1000e ptp usbhid hid sdhci_pci ahci
pps_core libahci sdhci$
[ 44.491097] CPU: 0 PID: 57 Comm: kworker/0:1 Not tainted 3.13.0-5-generic
#20-Ubuntu$
[ 44.491106] Hardware name: Intel Corp. VALLEYVIEW B0 PLATFORM/NOTEBOOK, BIOS
BYTICRB1.X64.0072.R11.1312171421 12/17/2013$
[ 44.491129] Workqueue: events i915_hotplug_work_func [i915]$
[ 44.491138] 0000000000000009 ffff880136557a30 ffffffff81705069
ffff880136557a78$
[ 44.491150] ffff880136557a68 ffffffff8106467d ffff8800aaa34000
00000000000000f0$
[ 44.491161] 00000000ffff0680 0000000000000001 ffff8800aa93b800
ffff880136557ac8$
[ 44.491172] Call Trace:$
[ 44.491187] [<ffffffff81705069>] dump_stack+0x45/0x56$
[ 44.491201] [<ffffffff8106467d>] warn_slowpath_common+0x7d/0xa0$
[ 44.491212] [<ffffffff810646ec>] warn_slowpath_fmt+0x4c/0x50$
[ 44.491244] [<ffffffffa0212de4>] vlv_wait_port_ready+0x104/0x110 [i915]$
[ 44.491276] [<ffffffffa022ee33>] vlv_pre_enable_dp+0x113/0x160 [i915]$
[ 44.491305] [<ffffffffa0217fec>] valleyview_crtc_enable+0x12c/0x490 [i915]$
[ 44.491334] [<ffffffffa021a6c9>] __intel_set_mode+0x859/0x9c0 [i915]$
[ 44.491347] [<ffffffff81358d6f>] ? idr_get_empty_slot+0x16f/0x3c0$
[ 44.491377] [<ffffffffa021d376>] intel_set_mode+0x16/0x30 [i915]$
[ 44.491407] [<ffffffffa021dc2b>] intel_crtc_set_config+0x7ab/0x9a0 [i915]$
[ 44.491433] [<ffffffffa0183e6d>] drm_mode_set_config_internal+0x5d/0xe0
[drm]$
[ 44.491450] [<ffffffffa01c3f61>] drm_fb_helper_set_par+0x71/0xf0
[drm_kms_helper]$
[ 44.491473] [<ffffffffa0182ce2>] ? drm_modeset_unlock_all+0x52/0x60 [drm]$
[ 44.491487] [<ffffffffa01c3ee5>] drm_fb_helper_hotplug_event+0x105/0x110
[drm_kms_helper]$
[ 44.491522] [<ffffffffa025726c>] intel_fbdev_output_poll_changed+0x1c/0x20
[i915]$
[ 44.491535] [<ffffffffa01bfde7>] drm_kms_helper_hotplug_event+0x27/0x30
[drm_kms_helper]$
[ 44.491558] [<ffffffffa01e489a>] i915_hotplug_work_func+0x27a/0x360 [i915]$
[ 44.491573] [<ffffffff81080872>] process_one_work+0x182/0x450$
[ 44.491584] [<ffffffff81081611>] worker_thread+0x121/0x410$
[ 44.491590] [<ffffffff810814f0>] ? rescuer_thread+0x3e0/0x3e0$
[ 44.491596] [<ffffffff81088262>] kthread+0xd2/0xf0$
[ 44.491606] [<ffffffff81088190>] ? kthread_create_on_node+0x190/0x190$
[ 44.491618] [<ffffffff8171597c>] ret_from_fork+0x7c/0xb0$
[ 44.491631] [<ffffffff81088190>] ? kthread_create_on_node+0x190/0x190$
[ 44.491635] ---[ end trace 86f6c365b130eff9 ]---$
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