<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Flickering Screen on Dell XPS13 9350" href="https://bugs.freedesktop.org/show_bug.cgi?id=94593#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Flickering Screen on Dell XPS13 9350" href="https://bugs.freedesktop.org/show_bug.cgi?id=94593">bug 94593</a> from <a class="email" href="mailto:peteryuchuang@gmail.com" title="Peter Y. Chuang <peteryuchuang@gmail.com>"> Peter Y. Chuang</a> <pre>Here's the dmesg FYI: $ dmesg|grep i915 [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-linux-mainline root=UUID=0e20ff18-cf60-41db-b0ec-d752d5df0844 rw cryptdevice=/dev/disk/by-uuid/12f4a4fd-0a88-4327-b272-f3ca8fd5d82d:lvm:allow-discards quiet resume=/dev/disk/by-uuid/886bcda0-2e8a-4068-aba2-664991526834 pcie_aspm=force i915.enable_execlists=0 i915.enable_psr=1 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-linux-mainline root=UUID=0e20ff18-cf60-41db-b0ec-d752d5df0844 rw cryptdevice=/dev/disk/by-uuid/12f4a4fd-0a88-4327-b272-f3ca8fd5d82d:lvm:allow-discards quiet resume=/dev/disk/by-uuid/886bcda0-2e8a-4068-aba2-664991526834 pcie_aspm=force i915.enable_execlists=0 i915.enable_psr=1 [ 0.897902] [drm] Finished loading i915/skl_dmc_ver1.bin (v1.23) [ 0.917624] [drm] Initialized i915 1.6.0 20160229 for 0000:00:02.0 on minor 0 [ 2.644829] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 9.329977] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_exit [i915]) [ 24.371605] WARNING: CPU: 0 PID: 884 at drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x80/0x90 [i915] [ 24.371669] af_alg dm_crypt dm_mod sd_mod rtsx_pci_sdmmc mmc_core atkbd libps2 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci libahci xhci_pci libata xhci_hcd rtsx_pci scsi_mod usbcore usb_common i8042 serio i915 video button i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm intel_agp intel_gtt [ 24.371722] [<ffffffffa013f0e0>] __unclaimed_reg_debug+0x80/0x90 [i915] [ 24.371731] [<ffffffffa013fb8e>] gen9_read32+0x33e/0x3b0 [i915] [ 24.371742] [<ffffffffa0149b49>] i915_audio_component_codec_wake_override+0x39/0xb0 [i915] [ 342.932696] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>