<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - output probing flickers display [GM45]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90665">90665</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>output probing flickers display [GM45]
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>10.5
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>serafean@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>I might be reportung two bugs simultaneously, not sure.
After resume, sometimes I get a Pipe A underrun error. IMO this is connected to
qt5 apps probing for connected displays at every startup and resume.
As a bonus this makes the display hang and flicker at every qt5 application
start.
[41331.035174] WARNING: CPU: 1 PID: 7083 at drivers/gpu/drm/drm_irq.c:1121
drm_wait_one_vblank+0x190/0x1a0 [drm]()
[41331.035177] vblank not available on crtc 1, ret=-22
[41331.035180] Modules linked in: ctr ccm bnep bluetooth crc16 uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
arc4 joydev mousedev iwldvm mac80211 iTCO_wdt acer_wmi iTCO_vendor_support
sparse_keymap led_class snd_hda_codec_hdmi snd_hda_codec_realtek psmouse
snd_hda_codec_generic wl(PO) ip6t_REJECT nf_reject_ipv6 evdev nf_log_ipv6
snd_hda_intel i915 snd_hda_controller mac_hid snd_hda_codec serio_raw iwlwifi
drm_kms_helper snd_hwdep cfg80211 drm snd_pcm i2c_i801 rfkill i2c_algo_bit
snd_timer i2c_core snd atl1c lpc_ich soundcore shpchp wmi intel_agp battery
button intel_gtt dell_smo8800 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6
ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp
xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
[41331.035262] ip6table_filter ip6_tables nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack_irc
nf_conntrack iptable_filter ip_tables x_tables sch_fq_codel coretemp hwmon
cpufreq_powersave acpi_cpufreq vhba(O) thermal ac video processor sbs sbshc fan
crc32c_generic btrfs xor raid6_pq sd_mod hid_multitouch usbhid hid atkbd libps2
ahci libahci libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common
i8042 serio
[41331.035318] CPU: 1 PID: 7083 Comm: Xorg.bin Tainted: P W IO
3.19.4-1-CHAKRA #1
[41331.035321] Hardware name: Packard Bell ENBFT/SJM12-MS, BIOS v1.3108
11/02/2009
[41331.035324] 0000000000000000 00000000e314bdff ffff88008716f718
ffffffff8158300d
[41331.035330] 0000000000000000 ffff88008716f770 ffff88008716f758
ffffffff81074dba
[41331.035335] ffff88008716f778 ffff8800b2320000 ffff8800b1a21000
0000000000000001
[41331.035341] Call Trace:
[41331.035351] [<ffffffff8158300d>] dump_stack+0x4c/0x6e
[41331.035359] [<ffffffff81074dba>] warn_slowpath_common+0x8a/0xc0
[41331.035365] [<ffffffff81074e45>] warn_slowpath_fmt+0x55/0x70
[41331.035385] [<ffffffffa04540e0>] drm_wait_one_vblank+0x190/0x1a0 [drm]
[41331.035425] [<ffffffffa060cfff>] ? gen4_read32+0x4f/0xd0 [i915]
[41331.035466] [<ffffffffa0661635>] intel_enable_tv+0x25/0x60 [i915]
[41331.035501] [<ffffffffa062aebb>] i9xx_crtc_enable+0x3fb/0x4b0 [i915]
[41331.035537] [<ffffffffa0629432>] __intel_set_mode+0x8a2/0xca0 [i915]
[41331.035573] [<ffffffffa062f08c>] intel_set_mode+0x7c/0xc0 [i915]
[41331.035608] [<ffffffffa061ab0c>] ? intel_framebuffer_init+0x31c/0x440
[i915]
[41331.035643] [<ffffffffa062f356>] intel_get_load_detect_pipe+0x286/0x620
[i915]
[41331.035684] [<ffffffffa0662234>] intel_tv_detect+0x134/0x5c0 [i915]
[41331.035691] [<ffffffff810df310>] ? migrate_timer_list+0xd0/0xd0
[41331.035708] [<ffffffffa04a1bf3>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x460 [drm_kms_helper]
[41331.035719] [<ffffffffa04a1d63>]
drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[41331.035744] [<ffffffffa04603bf>] drm_mode_getconnector+0x43f/0x4b0 [drm]
[41331.035762] [<ffffffffa0451cef>] drm_ioctl+0x1df/0x680 [drm]
[41331.035769] [<ffffffff810804c7>] ? recalc_sigpending+0x17/0x60
[41331.035777] [<ffffffff811ede38>] do_vfs_ioctl+0x2f8/0x500
[41331.035783] [<ffffffff810850a8>] ? restore_altstack+0x18/0x30
[41331.035788] [<ffffffff811ee0c1>] SyS_ioctl+0x81/0xa0
[41331.035794] [<ffffffff8158898d>] system_call_fastpath+0x16/0x1b
[41331.035798] ---[ end trace 3e070c7deaca9f8e ]---
[41331.035845] [drm:i9xx_check_fifo_underruns [i915]] *ERROR* pipe A underrun
[41331.052774] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[41331.249791] ------------[ cut here ]------------
[41331.249829] WARNING: CPU: 0 PID: 7083 at drivers/gpu/drm/drm_irq.c:1121
drm_wait_one_vblank+0x190/0x1a0 [drm]()
[41331.249833] vblank not available on crtc 1, ret=-22
[41331.249836] Modules linked in: ctr ccm bnep bluetooth crc16 uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
arc4 joydev mousedev iwldvm mac80211 iTCO_wdt acer_wmi iTCO_vendor_support
sparse_keymap led_class snd_hda_codec_hdmi snd_hda_codec_realtek psmouse
snd_hda_codec_generic wl(PO) ip6t_REJECT nf_reject_ipv6 evdev nf_log_ipv6
snd_hda_intel i915 snd_hda_controller mac_hid snd_hda_codec serio_raw iwlwifi
drm_kms_helper snd_hwdep cfg80211 drm snd_pcm i2c_i801 rfkill i2c_algo_bit
snd_timer i2c_core snd atl1c lpc_ich soundcore shpchp wmi intel_agp battery
button intel_gtt dell_smo8800 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6
ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp
xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
[41331.249918] ip6table_filter ip6_tables nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack_irc
nf_conntrack iptable_filter ip_tables x_tables sch_fq_codel coretemp hwmon
cpufreq_powersave acpi_cpufreq vhba(O) thermal ac video processor sbs sbshc fan
crc32c_generic btrfs xor raid6_pq sd_mod hid_multitouch usbhid hid atkbd libps2
ahci libahci libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common
i8042 serio
[41331.249976] CPU: 0 PID: 7083 Comm: Xorg.bin Tainted: P W IO
3.19.4-1-CHAKRA #1
[41331.249979] Hardware name: Packard Bell ENBFT/SJM12-MS, BIOS v1.3108
11/02/2009
[41331.249982] 0000000000000000 00000000e314bdff ffff88008716f718
ffffffff8158300d
[41331.249988] 0000000000000000 ffff88008716f770 ffff88008716f758
ffffffff81074dba
[41331.249993] ffff88008716f778 ffff8800b2320000 ffff8800b1a21000
0000000000000001
[41331.249999] Call Trace:
[41331.250009] [<ffffffff8158300d>] dump_stack+0x4c/0x6e
[41331.250017] [<ffffffff81074dba>] warn_slowpath_common+0x8a/0xc0
[41331.250023] [<ffffffff81074e45>] warn_slowpath_fmt+0x55/0x70
[41331.250042] [<ffffffffa04540e0>] drm_wait_one_vblank+0x190/0x1a0 [drm]
[41331.250083] [<ffffffffa060cfff>] ? gen4_read32+0x4f/0xd0 [i915]
[41331.250124] [<ffffffffa0661635>] intel_enable_tv+0x25/0x60 [i915]
[41331.250159] [<ffffffffa062aebb>] i9xx_crtc_enable+0x3fb/0x4b0 [i915]
[41331.250195] [<ffffffffa0629432>] __intel_set_mode+0x8a2/0xca0 [i915]
[41331.250231] [<ffffffffa062f08c>] intel_set_mode+0x7c/0xc0 [i915]
[41331.250266] [<ffffffffa061ab0c>] ? intel_framebuffer_init+0x31c/0x440
[i915]
[41331.250301] [<ffffffffa062f356>] intel_get_load_detecton resume, every
time. Make Qt5 apps flicker unnicely.
[41331.035174] WARNING: CPU: 1 PID: 7083 at drivers/gpu/drm/drm_irq.c:1121
drm_wait_one_vblank+0x190/0x1a0 [drm]()
[41331.035177] vblank not available on crtc 1, ret=-22
[41331.035180] Modules linked in: ctr ccm bnep bluetooth crc16 uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
arc4 joydev mousedev iwldvm mac80211 iTCO_wdt acer_wmi iTCO_vendor_support
sparse_keymap led_class snd_hda_codec_hdmi snd_hda_codec_realtek psmouse
snd_hda_codec_generic wl(PO) ip6t_REJECT nf_reject_ipv6 evdev nf_log_ipv6
snd_hda_intel i915 snd_hda_controller mac_hid snd_hda_codec serio_raw iwlwifi
drm_kms_helper snd_hwdep cfg80211 drm snd_pcm i2c_i801 rfkill i2c_algo_bit
snd_timer i2c_core snd atl1c lpc_ich soundcore shpchp wmi intel_agp battery
button intel_gtt dell_smo8800 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6
ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp
xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
[41331.035262] ip6table_filter ip6_tables nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack_irc
nf_conntrack iptable_filter ip_tables x_tables sch_fq_codel coretemp hwmon
cpufreq_powersave acpi_cpufreq vhba(O) thermal ac video processor sbs sbshc fan
crc32c_generic btrfs xor raid6_pq sd_mod hid_multitouch usbhid hid atkbd libps2
ahci libahci libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common
i8042 serio
[41331.035318] CPU: 1 PID: 7083 Comm: Xorg.bin Tainted: P W IO
3.19.4-1-CHAKRA #1
[41331.035321] Hardware name: Packard Bell ENBFT/SJM12-MS, BIOS v1.3108
11/02/2009
[41331.035324] 0000000000000000 00000000e314bdff ffff88008716f718
ffffffff8158300d
[41331.035330] 0000000000000000 ffff88008716f770 ffff88008716f758
ffffffff81074dba
[41331.035335] ffff88008716f778 ffff8800b2320000 ffff8800b1a21000
0000000000000001
[41331.035341] Call Trace:
[41331.035351] [<ffffffff8158300d>] dump_stack+0x4c/0x6e
[41331.035359] [<ffffffff81074dba>] warn_slowpath_common+0x8a/0xc0
[41331.035365] [<ffffffff81074e45>] warn_slowpath_fmt+0x55/0x70
[41331.035385] [<ffffffffa04540e0>] drm_wait_one_vblank+0x190/0x1a0 [drm]
[41331.035425] [<ffffffffa060cfff>] ? gen4_read32+0x4f/0xd0 [i915]
[41331.035466] [<ffffffffa0661635>] intel_enable_tv+0x25/0x60 [i915]
[41331.035501] [<ffffffffa062aebb>] i9xx_crtc_enable+0x3fb/0x4b0 [i915]
[41331.035537] [<ffffffffa0629432>] __intel_set_mode+0x8a2/0xca0 [i915]
[41331.035573] [<ffffffffa062f08c>] intel_set_mode+0x7c/0xc0 [i915]
[41331.035608] [<ffffffffa061ab0c>] ? intel_framebuffer_init+0x31c/0x440
[i915]
[41331.035643] [<ffffffffa062f356>] intel_get_load_detect_pipe+0x286/0x620
[i915]
[41331.035684] [<ffffffffa0662234>] intel_tv_detect+0x134/0x5c0 [i915]
[41331.035691] [<ffffffff810df310>] ? migrate_timer_list+0xd0/0xd0
[41331.035708] [<ffffffffa04a1bf3>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x460 [drm_kms_helper]
[41331.035719] [<ffffffffa04a1d63>]
drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[41331.035744] [<ffffffffa04603bf>] drm_mode_getconnector+0x43f/0x4b0 [drm]
[41331.035762] [<ffffffffa0451cef>] drm_ioctl+0x1df/0x680 [drm]
[41331.035769] [<ffffffff810804c7>] ? recalc_sigpending+0x17/0x60
[41331.035777] [<ffffffff811ede38>] do_vfs_ioctl+0x2f8/0x500
[41331.035783] [<ffffffff810850a8>] ? restore_altstack+0x18/0x30
[41331.035788] [<ffffffff811ee0c1>] SyS_ioctl+0x81/0xa0
[41331.035794] [<ffffffff8158898d>] system_call_fastpath+0x16/0x1b
[41331.035798] ---[ end trace 3e070c7deaca9f8e ]---
[41331.035845] [drm:i9xx_check_fifo_underruns [i915]] *ERROR* pipe A underrun
[41331.052774] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[41331.249791] ------------[ cut here ]------------
[41331.249829] WARNING: CPU: 0 PID: 7083 at drivers/gpu/drm/drm_irq.c:1121
drm_wait_one_vblank+0x190/0x1a0 [drm]()
[41331.249833] vblank not available on crtc 1, ret=-22
[41331.249836] Modules linked in: ctr ccm bnep bluetooth crc16 uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
arc4 joydev mousedev iwldvm mac80211 iTCO_wdt acer_wmi iTCO_vendor_support
sparse_keymap led_class snd_hda_codec_hdmi snd_hda_codec_realtek psmouse
snd_hda_codec_generic wl(PO) ip6t_REJECT nf_reject_ipv6 evdev nf_log_ipv6
snd_hda_intel i915 snd_hda_controller mac_hid snd_hda_codec serio_raw iwlwifi
drm_kms_helper snd_hwdep cfg80211 drm snd_pcm i2c_i801 rfkill i2c_algo_bit
snd_timer i2c_core snd atl1c lpc_ich soundcore shpchp wmi intel_agp battery
button intel_gtt dell_smo8800 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6
ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp
xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
[41331.249918] ip6table_filter ip6_tables nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack_irc
nf_conntrack iptable_filter ip_tables x_tables sch_fq_codel coretemp hwmon
cpufreq_powersave acpi_cpufreq vhba(O) thermal ac video processor sbs sbshc fan
crc32c_generic btrfs xor raid6_pq sd_mod hid_multitouch usbhid hid atkbd libps2
ahci libahci libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common
i8042 serio
[41331.249976] CPU: 0 PID: 7083 Comm: Xorg.bin Tainted: P W IO
3.19.4-1-CHAKRA #1
[41331.249979] Hardware name: Packard Bell ENBFT/SJM12-MS, BIOS v1.3108
11/02/2009
[41331.249982] 0000000000000000 00000000e314bdff ffff88008716f718
ffffffff8158300d
[41331.249988] 0000000000000000 ffff88008716f770 ffff88008716f758
ffffffff81074dba
[41331.249993] ffff88008716f778 ffff8800b2320000 ffff8800b1a21000
0000000000000001
[41331.249999] Call Trace:
[41331.250009] [<ffffffff8158300d>] dump_stack+0x4c/0x6e
[41331.250017] [<ffffffff81074dba>] warn_slowpath_common+0x8a/0xc0
[41331.250023] [<ffffffff81074e45>] warn_slowpath_fmt+0x55/0x70
[41331.250042] [<ffffffffa04540e0>] drm_wait_one_vblank+0x190/0x1a0 [drm]
[41331.250083] [<ffffffffa060cfff>] ? gen4_read32+0x4f/0xd0 [i915]
[41331.250124] [<ffffffffa0661635>] intel_enable_tv+0x25/0x60 [i915]
[41331.250159] [<ffffffffa062aebb>] i9xx_crtc_enable+0x3fb/0x4b0 [i915]
[41331.250195] [<ffffffffa0629432>] __intel_set_mode+0x8a2/0xca0 [i915]
[41331.250231] [<ffffffffa062f08c>] intel_set_mode+0x7c/0xc0 [i915]
[41331.250266] [<ffffffffa061ab0c>] ? intel_framebuffer_init+0x31c/0x440
[i915]
[41331.250301] [<ffffffffa062f356>] intel_get_load_detect_pipe+0x286/0x620
[i915]
[41331.250342] [<ffffffffa0662234>] intel_tv_detect+0x134/0x5c0 [i915]
[41331.250358] [<ffffffffa04a1bf3>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x460 [drm_kms_helper]
[41331.250370] [<ffffffffa04a1d63>]
drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[41331.250394] [<ffffffffa04603bf>] drm_mode_getconnector+0x43f/0x4b0 [drm]
[41331.250401] [<ffffffff810e1565>] ? __hrtimer_start_range_ns+0x1f5/0x420
[41331.250419] [<ffffffffa0451cef>] drm_ioctl+0x1df/0x680 [drm]
[41331.250425] [<ffffffff810804c7>] ? recalc_sigpending+0x17/0x60
[41331.250434] [<ffffffff811ede38>] do_vfs_ioctl+0x2f8/0x500
[41331.250440] [<ffffffff810850a8>] ? restore_altstack+0x18/0x30
[41331.250444] [<ffffffff811ee0c1>] SyS_ioctl+0x81/0xa0
[41331.250451] [<ffffffff8158898d>] system_call_fastpath+0x16/0x1b
[41331.250455] ---[ end trace 3e070c7deaca9f8f ]---
_pipe+0x286/0x620 [i915]
[41331.250342] [<ffffffffa0662234>] intel_tv_detect+0x134/0x5c0 [i915]
[41331.250358] [<ffffffffa04a1bf3>]
drm_helper_probe_single_connector_modes_merge_bits+0x303/0x460 [drm_kms_helper]
[41331.250370] [<ffffffffa04a1d63>]
drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[41331.250394] [<ffffffffa04603bf>] drm_mode_getconnector+0x43f/0x4b0 [drm]
[41331.250401] [<ffffffff810e1565>] ? __hrtimer_start_range_ns+0x1f5/0x420
[41331.250419] [<ffffffffa0451cef>] drm_ioctl+0x1df/0x680 [drm]
[41331.250425] [<ffffffff810804c7>] ? recalc_sigpending+0x17/0x60
[41331.250434] [<ffffffff811ede38>] do_vfs_ioctl+0x2f8/0x500
[41331.250440] [<ffffffff810850a8>] ? restore_altstack+0x18/0x30
[41331.250444] [<ffffffff811ee0c1>] SyS_ioctl+0x81/0xa0
[41331.250451] [<ffffffff8158898d>] system_call_fastpath+0x16/0x1b
[41331.250455] ---[ end trace 3e070c7deaca9f8f ]---</pre>
</div>
</p>
<hr>
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<ul>
<li>You are the QA Contact for the bug.</li>
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