Happens also on a brand new XPS 15 9550 laptop. I tried also today's kernel git (with some drm fixes for i915).
System is installed anew with Debian testing up-to-date, latest kernel code and intel video driver 2:2.99.917+git20160218-1.
Symptoms:
- system boots (lightdm)
- laptop screen blinks like crazy, monitor picture is ok (Dell P2715Q, HDMI connection)
- after logging-in everything freezes - I have to turn-off computer.
What I do to make it work:
- boot without HDMI plugged-in
- after log-in, plug-in HDMI and then I have stable environment.
Happens also on a brand new XPS 15 9550 laptop. I tried also today's kernel git (with some drm fixes for i915).
System is installed anew with Debian testing up-to-date, latest kernel code and intel video driver 2:2.99. 917+git20160218 -1.
Symptoms:
- system boots (lightdm)
- laptop screen blinks like crazy, monitor picture is ok (Dell P2715Q, HDMI connection)
- after logging-in everything freezes - I have to turn-off computer.
What I do to make it work:
- boot without HDMI plugged-in
- after log-in, plug-in HDMI and then I have stable environment.
This is the trace I found in syslog: gpu/drm/ i915/intel_ pm.c:3553 skl_update_ other_pipe_ wm+0x133/ 0x140 [i915]() !wm_changed) codec_realtek snd_hda_ codec_generic bbswitch(O) intel_rapl x86_pkg_ temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel jitterentropy_rng joydev nls_utf8 dell_wmi nls_cp437 mxm_wmi drbg snd_hda_intel vfat ansi_cprng fat snd_hda_codec snd_hda_core aesni_intel efi_pstore snd_hwdep aes_x86_64 lrw gf128mul glue_helper ablk_helper dell_laptop dcdbas snd_pcm cryptd snd_timer evdev pcspkr snd efivars idma64 serio_raw i2c_i801 soundcore virt_dma brcmfmac brcmutil cfg80211 i915 intel_gtt i2c_algo_bit mei_me drm_kms_helper mei drm syscopyarea sysfillrect sysimgblt fb_sys_fops intel_lpss_pci processor_ thermal_ device shpchp intel_soc_dts_iosf battery hci_uart btbcm btintel int3403_thermal bluetooth dell_smo8800 wmi video rfkill intel_lpss_acpi intel_lpss int3400_thermal int3402_thermal tpm_tis int340x_ thermal_ zone acpi_thermal_rel ac acpi_pad tpm intel_hid button processor ecryptfs cbc sha256_ssse3 sha256_generic hmac encrypted_keys parport_pc ppdev lp parport efivarfs autofs4 ext4 crc16 mbcache jbd2 rtsx_pci_sdmmc mmc_core crc32c_intel psmouse ahci libahci xhci_pci libata rtsx_pci nvme xhci_hcd mfd_core scsi_mod usbcore usb_common fan thermal i2c_hid hid 5b13>] ? dump_stack+ 0x5c/0x79 d93d>] ? warn_slowpath_ common+ 0x7d/0xb0 d9cc>] ? warn_slowpath_ fmt+0x5c/ 0x80 ddd3>] ? skl_update_ other_pipe_ wm+0x133/ 0x140 [i915] df45>] ? skl_update_ wm+0x165/ 0x5a0 [i915] 5440>] ? _raw_spin_ unlock_ irqrestore+ 0x20/0x40 576c>] ? intel_ddi_ enable_ transcoder_ func+0x17c/ 0x260 [i915] 9838>] ? haswell_ crtc_enable+ 0x308/0x880 [i915] 5440>] ? _raw_spin_ unlock_ irqrestore+ 0x20/0x40 52e2>] ? intel_atomic_ commit+ 0x6d2/0x16c0 [i915] 0845>] ? drm_atomic_ check_only+ 0x185/0x600 [drm] 10a2>] ? drm_atomic_ add_affected_ connectors+ 0x22/0xe0 [drm] 4d13>] ? restore_ fbdev_mode+ 0x223/0x250 [drm_kms_helper] 6dee>] ? drm_fb_ helper_ restore_ fbdev_mode_ unlocked+ 0x2e/0x70 [drm_kms_helper] 6e59>] ? drm_fb_ helper_ set_par+ 0x29/0x50 [drm_kms_helper] c0a6>] ? intel_fbdev_ set_par+ 0x16/0x60 [i915] 43cd>] ? fbcon_init+ 0x54d/0x5e0 7df3>] ? visual_ init+0xc3/ 0x120 9433>] ? do_bind_ con_driver+ 0x1e3/0x3d0 995b>] ? do_take_ over_console+ 0x13b/0x190 03b3>] ? do_fbcon_ takeover+ 0x53/0xb0 c475>] ? notifier_ call_chain+ 0x45/0x70 c7e1>] ? __blocking_ notifier_ call_chain+ 0x41/0x60 c48f>] ? register_ framebuffer+ 0x20f/0x360 2069>] ? vga_switcheroo_ client_ fb_set+ 0x19/0x70 7118>] ? drm_fb_ helper_ initial_ config+ 0x298/0x420 [drm_kms_helper] cc1b>] ? intel_fbdev_ initial_ config+ 0x1b/0x30 [i915] dde5>] ? async_run_ entry_fn+ 0x45/0x130 5b41>] ? process_ one_work+ 0x151/0x430 5e6a>] ? worker_ thread+ 0x4a/0x460 5e20>] ? process_ one_work+ 0x430/0x430 b7fd>] ? kthread+0xcd/0xf0 b730>] ? kthread_ worker_ fn+0x150/ 0x150 5f8f>] ? ret_from_ fork+0x3f/ 0x70 b730>] ? kthread_ worker_ fn+0x150/ 0x150
------------[ cut here ]------------
WARNING: CPU: 1 PID: 77 at drivers/
WARN_ON(
Modules linked in: ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables snd_hda_codec_hdmi dell_led snd_hda_
CPU: 1 PID: 77 Comm: kworker/u16:1 Tainted: G O 4.5.0-rc5+ #3
Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19 01/25/2016
Workqueue: events_unbound async_run_entry_fn
0000000000000286 0000000055a2a6f3 ffffffff812e5b13 ffff88089825b7f8
ffffffffa06617d0 ffffffff8105d93d ffff88089aa12000 ffff88089825b850
ffff88089a2f9bd4 ffff88089abf3000 ffff88089abf33a8 ffffffff8105d9cc
Call Trace:
[<ffffffff812e
[<ffffffff8105
[<ffffffff8105
[<ffffffffa059
[<ffffffffa059
[<ffffffff8157
[<ffffffffa062
[<ffffffffa060
[<ffffffff8157
[<ffffffffa060
[<ffffffffa04d
[<ffffffffa04d
[<ffffffffa055
[<ffffffffa055
[<ffffffffa055
[<ffffffffa061
[<ffffffff8135
[<ffffffff813b
[<ffffffff813b
[<ffffffff813b
[<ffffffff8135
[<ffffffff8107
[<ffffffff8107
[<ffffffff8135
[<ffffffff813e
[<ffffffffa055
[<ffffffffa061
[<ffffffff8107
[<ffffffff8107
[<ffffffff8107
[<ffffffff8107
[<ffffffff8107
[<ffffffff8107
[<ffffffff8157
[<ffffffff8107
---[ end trace f9c041c4b6f1a3ff ]---