<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [ivb DP dual link DVI dongle regression] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up" href="https://bugs.freedesktop.org/show_bug.cgi?id=56834#c55">Comment # 55</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [ivb DP dual link DVI dongle regression] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up" href="https://bugs.freedesktop.org/show_bug.cgi?id=56834">bug 56834</a> from <a class="email" href="mailto:giulio.genovese@gmail.com" title="freeseek <giulio.genovese@gmail.com>"> freeseek</a> <pre>The situation is still not improved with Ubuntu 14.10. However, with kernel 3.16.0-23-generic I get a somewhat different output in dmesg (this is when I switch off the laptop screen to have the output only on the external monitor): [ 47.631564] [drm:intel_dp_start_link_train] *ERROR* failed to enable link training [ 47.638442] [drm:intel_dp_complete_link_train] *ERROR* failed to start channel equalization [ 47.670056] [drm:cpt_verify_modeset] *ERROR* mode set failed: pipe B stuck [ 47.670115] ------------[ cut here ]------------ [ 47.670146] WARNING: CPU: 0 PID: 1724 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:10120 intel_modeset_check_state+0x559/0x7c0 [i915]() [ 47.670147] encoder's hw state doesn't match sw tracking (expected 1, found 0) [ 47.670148] Modules linked in: ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep bluetooth 6lowpan_iphc binfmt_misc asix usbnet mii snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwldvm snd_hda_intel snd_hda_controller joydev snd_hda_codec mac80211 serio_raw snd_hwdep snd_pcm iwlwifi snd_seq_midi cfg80211 snd_seq_midi_event lpc_ich snd_rawmidi snd_seq snd_seq_device snd_timer [ 47.670166] thinkpad_acpi nvram snd shpchp soundcore mei_me mei mac_hid parport_pc ppdev lp parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear hid_generic usbhid hid i915 ahci psmouse e1000e libahci i2c_algo_bit drm_kms_helper sdhci_pci drm ptp sdhci pps_core wmi video [ 47.670180] CPU: 0 PID: 1724 Comm: Xorg Tainted: G W OE 3.16.0-23-generic #31-Ubuntu [ 47.670181] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET69WW (1.39 ) 07/18/2013 [ 47.670182] 0000000000000009 ffff880206243b98 ffffffff8177fcbc ffff880206243be0 [ 47.670184] ffff880206243bd0 ffffffff8106fd8d ffff88021263b800 ffff880206243c50 [ 47.670186] 0000000000000001 ffff88021263bb10 ffff88020eda1800 ffff880206243c30 [ 47.670187] Call Trace: [ 47.670193] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 47.670196] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 47.670198] [<ffffffff8106fdfc>] warn_slowpath_fmt+0x4c/0x50 [ 47.670211] [<ffffffffc049d809>] intel_modeset_check_state+0x559/0x7c0 [i915] [ 47.670221] [<ffffffffc049db05>] intel_set_mode+0x25/0x30 [i915] [ 47.670231] [<ffffffffc049ebba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 47.670241] [<ffffffffc035d6d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 47.670250] [<ffffffffc0361413>] drm_mode_setcrtc+0x283/0x580 [drm] [ 47.670256] [<ffffffffc0351a4f>] drm_ioctl+0x1df/0x680 [drm] [ 47.670260] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 47.670262] [<ffffffff811e31a1>] ? __sb_end_write+0x31/0x60 [ 47.670264] [<ffffffff811e0d12>] ? vfs_write+0x1b2/0x1f0 [ 47.670266] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 47.670268] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 47.670269] ---[ end trace 898071e4e63bb9c2 ]--- [ 47.670285] [drm:intel_pipe_config_compare] *ERROR* mismatch in has_dp_encoder (expected 1, found 0) [ 47.670286] ------------[ cut here ]------------ [ 47.670296] WARNING: CPU: 0 PID: 1724 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:10192 check_crtc_state+0x2f5/0x3f0 [i915]() [ 47.670297] pipe state doesn't match! [ 47.670297] Modules linked in: ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep bluetooth 6lowpan_iphc binfmt_misc asix usbnet mii snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwldvm snd_hda_intel snd_hda_controller joydev snd_hda_codec mac80211 serio_raw snd_hwdep snd_pcm iwlwifi snd_seq_midi cfg80211 snd_seq_midi_event lpc_ich snd_rawmidi snd_seq snd_seq_device snd_timer [ 47.670314] thinkpad_acpi nvram snd shpchp soundcore mei_me mei mac_hid parport_pc ppdev lp parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear hid_generic usbhid hid i915 ahci psmouse e1000e libahci i2c_algo_bit drm_kms_helper sdhci_pci drm ptp sdhci pps_core wmi video [ 47.670324] CPU: 0 PID: 1724 Comm: Xorg Tainted: G W OE 3.16.0-23-generic #31-Ubuntu [ 47.670325] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET69WW (1.39 ) 07/18/2013 [ 47.670326] 0000000000000009 ffff8802062438d0 ffffffff8177fcbc ffff880206243918 [ 47.670327] ffff880206243908 ffffffff8106fd8d ffff8802062439a0 ffff88021263b800 [ 47.670329] ffff88021263bb40 ffff880212579000 ffff8802125796f8 ffff880206243968 [ 47.670330] Call Trace: [ 47.670332] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 47.670334] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 47.670336] [<ffffffff8106fdfc>] warn_slowpath_fmt+0x4c/0x50 [ 47.670346] [<ffffffffc048ce5b>] ? intel_pipe_config_compare+0x64b/0xba0 [i915] [ 47.670356] [<ffffffffc048ea35>] check_crtc_state+0x2f5/0x3f0 [i915] [ 47.670359] [<ffffffff813a5776>] ? sprintf+0x46/0x50 [ 47.670369] [<ffffffffc049d5c9>] intel_modeset_check_state+0x319/0x7c0 [i915] [ 47.670379] [<ffffffffc049db05>] intel_set_mode+0x25/0x30 [i915] [ 47.670388] [<ffffffffc049ebba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 47.670397] [<ffffffffc035d6d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 47.670405] [<ffffffffc0361413>] drm_mode_setcrtc+0x283/0x580 [drm] [ 47.670411] [<ffffffffc0351a4f>] drm_ioctl+0x1df/0x680 [drm] [ 47.670414] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 47.670415] [<ffffffff811e31a1>] ? __sb_end_write+0x31/0x60 [ 47.670417] [<ffffffff811e0d12>] ? vfs_write+0x1b2/0x1f0 [ 47.670418] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 47.670420] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 47.670421] ---[ end trace 898071e4e63bb9c3 ]--- [ 47.677066] ------------[ cut here ]------------ [ 47.677155] WARNING: CPU: 0 PID: 1724 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_dp.c:3125 intel_dp_link_down+0x1d1/0x230 [i915]() [ 47.677160] Modules linked in: ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep bluetooth 6lowpan_iphc binfmt_misc asix usbnet mii snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwldvm snd_hda_intel snd_hda_controller joydev snd_hda_codec mac80211 serio_raw snd_hwdep snd_pcm iwlwifi snd_seq_midi cfg80211 snd_seq_midi_event lpc_ich snd_rawmidi snd_seq snd_seq_device snd_timer [ 47.677201] thinkpad_acpi nvram snd shpchp soundcore mei_me mei mac_hid parport_pc ppdev lp parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear hid_generic usbhid hid i915 ahci psmouse e1000e libahci i2c_algo_bit drm_kms_helper sdhci_pci drm ptp sdhci pps_core wmi video [ 47.677234] CPU: 0 PID: 1724 Comm: Xorg Tainted: G W OE 3.16.0-23-generic #31-Ubuntu [ 47.677236] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET69WW (1.39 ) 07/18/2013 [ 47.677238] 0000000000000009 ffff880206243ad8 ffffffff8177fcbc 0000000000000000 [ 47.677240] ffff880206243b10 ffffffff8106fd8d ffff88020e440000 0000000000180304 [ 47.677243] ffff88021263b800 0000000000000001 ffff88020eda18d8 ffff880206243b20 [ 47.677246] Call Trace: [ 47.677260] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 47.677269] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 47.677273] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20 [ 47.677320] [<ffffffffc04b12d1>] intel_dp_link_down+0x1d1/0x230 [i915] [ 47.677355] [<ffffffffc04b60c8>] intel_disable_dp+0x68/0x70 [i915] [ 47.677375] [<ffffffffc049819a>] ironlake_crtc_disable+0x15a/0x980 [i915] [ 47.677380] [<ffffffff811c2f49>] ? kmem_cache_alloc_trace+0x39/0x1e0 [ 47.677396] [<ffffffffc049a158>] ? __intel_set_mode+0x48/0xab0 [i915] [ 47.677411] [<ffffffffc049a397>] __intel_set_mode+0x287/0xab0 [i915] [ 47.677427] [<ffffffffc049daf6>] intel_set_mode+0x16/0x30 [i915] [ 47.677443] [<ffffffffc049ebba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 47.677460] [<ffffffffc035d6d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 47.677473] [<ffffffffc0361413>] drm_mode_setcrtc+0x283/0x580 [drm] [ 47.677483] [<ffffffffc0351a4f>] drm_ioctl+0x1df/0x680 [drm] [ 47.677489] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 47.677493] [<ffffffff81665ff5>] ? __sys_recvmsg+0x65/0x80 [ 47.677496] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 47.677500] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 47.677502] ---[ end trace 898071e4e63bb9c4 ]--- [ 47.785947] ------------[ cut here ]------------ [ 47.786032] WARNING: CPU: 2 PID: 1724 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:953 intel_wait_for_pipe_off+0x1d6/0x1e0 [i915]() [ 47.786036] pipe_off wait timed out [ 47.786038] Modules linked in: ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep bluetooth 6lowpan_iphc binfmt_misc asix usbnet mii snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwldvm snd_hda_intel snd_hda_controller joydev snd_hda_codec mac80211 serio_raw snd_hwdep snd_pcm iwlwifi snd_seq_midi cfg80211 snd_seq_midi_event lpc_ich snd_rawmidi snd_seq snd_seq_device snd_timer [ 47.786074] thinkpad_acpi nvram snd shpchp soundcore mei_me mei mac_hid parport_pc ppdev lp parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear hid_generic usbhid hid i915 ahci psmouse e1000e libahci i2c_algo_bit drm_kms_helper sdhci_pci drm ptp sdhci pps_core wmi video [ 47.786088] CPU: 2 PID: 1724 Comm: Xorg Tainted: G W OE 3.16.0-23-generic #31-Ubuntu [ 47.786089] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET69WW (1.39 ) 07/18/2013 [ 47.786090] 0000000000000009 ffff880206243aa0 ffffffff8177fcbc ffff880206243ae8 [ 47.786092] ffff880206243ad8 ffffffff8106fd8d ffff88020e440000 0000000000071008 [ 47.786094] 00000000ffff09b1 ffff88021263bb38 ffff88021263bb40 ffff880206243b38 [ 47.786095] Call Trace: [ 47.786101] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 47.786105] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 47.786107] [<ffffffff8106fdfc>] warn_slowpath_fmt+0x4c/0x50 [ 47.786118] [<ffffffffc0492796>] intel_wait_for_pipe_off+0x1d6/0x1e0 [i915] [ 47.786128] [<ffffffffc049284b>] intel_disable_pipe+0xab/0xc0 [i915] [ 47.786139] [<ffffffffc04980d8>] ironlake_crtc_disable+0x98/0x980 [i915] [ 47.786141] [<ffffffff811c2f49>] ? kmem_cache_alloc_trace+0x39/0x1e0 [ 47.786151] [<ffffffffc049a158>] ? __intel_set_mode+0x48/0xab0 [i915] [ 47.786161] [<ffffffffc049a397>] __intel_set_mode+0x287/0xab0 [i915] [ 47.786171] [<ffffffffc049daf6>] intel_set_mode+0x16/0x30 [i915] [ 47.786182] [<ffffffffc049ebba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 47.786192] [<ffffffffc035d6d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 47.786200] [<ffffffffc0361413>] drm_mode_setcrtc+0x283/0x580 [drm] [ 47.786207] [<ffffffffc0351a4f>] drm_ioctl+0x1df/0x680 [drm] [ 47.786210] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 47.786212] [<ffffffff81665ff5>] ? __sys_recvmsg+0x65/0x80 [ 47.786214] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 47.786216] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 47.786217] ---[ end trace 898071e4e63bb9c5 ]--- [ 47.849930] [drm:ironlake_disable_pch_transcoder] *ERROR* failed to disable transcoder B</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>