[Bug 1179905] New: Laptop screen flickers sporadically
http://bugzilla.opensuse.org/show_bug.cgi?id=1179905 Bug ID: 1179905 Summary: Laptop screen flickers sporadically Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.2 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: max@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- I just installed a Dell Latitude E5270 laptop and noticed that the builtin screen flickers sporadically� for a fraction of a second on both, text console and X. It looks a bit like a lose monitor cable, but I can exclude a hardware problem, because it also happens when I don't even touch the device, but it does not happen under Windows 10 that came preinstalled on the device. I discussed this with Stefan Dirsch and he suspected a bug in KMS. Please let me know what other information you need for tracking this down. ___ � intervals vary between a few seconds and several minutes -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1179905 http://bugzilla.opensuse.org/show_bug.cgi?id=1179905#c1 Takashi Iwai <tiwai@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |max@suse.com, | |tiwai@suse.com Flags| |needinfo?(max@suse.com) --- Comment #1 from Takashi Iwai <tiwai@suse.com> --- Could you give hwinfo output? If it's i915 driver, you can try some option to disable the power management stuff, e.g. passing i915.enable_dc=0 i915.enable_fbc=0 enable_ips=0 -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1179905 http://bugzilla.opensuse.org/show_bug.cgi?id=1179905#c2 Reinhard Max <max@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Flags|needinfo?(max@suse.com) | --- Comment #2 from Reinhard Max <max@suse.com> --- Thanks, Takashi for the quick response, and yes, it is i915. # hwinfo --gfxcard 20: PCI 02.0: 0300 VGA compatible controller (VGA) [Created at pci.386] Unique ID: _Znp.sD6karQZ3z3 SysFS ID: /devices/pci0000:00/0000:00:02.0 SysFS BusID: 0000:00:02.0 Hardware Class: graphics card Device Name: "Onboard IGD" Model: "Intel Skylake GT2 [HD Graphics 520]" Vendor: pci 0x8086 "Intel Corporation" Device: pci 0x1916 "Skylake GT2 [HD Graphics 520]" SubVendor: pci 0x1028 "Dell" SubDevice: pci 0x06dd Revision: 0x07 Driver: "i915" Driver Modules: "i915" Memory Range: 0xe0000000-0xe0ffffff (rw,non-prefetchable) Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable) I/O Ports: 0xf000-0xf03f (rw) Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled) IRQ: 127 (147708 events) I/O Ports: 0x3c0-0x3df (rw) Module Alias: "pci:v00008086d00001916sv00001028sd000006DDbc03sc00i00" Driver Info #0: Driver Status: i915 is active Driver Activation Cmd: "modprobe i915" Config Status: cfg=new, avail=yes, need=no, active=unknown Primary display adapter: #20 ------------------------------------------------------------------- [ 3.892359] fb0: switching to inteldrmfb from VESA VGA [ 3.963879] Console: switching to colour dummy device 80x25 [ 3.963913] i915 0000:00:02.0: vgaarb: deactivate vga console [ 3.965694] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 3.965696] [drm] Driver supports precise vblank timestamp query. [ 3.966430] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 3.967850] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27) [ 3.979238] PM: Image not found (code -22) [ 3.981707] [drm] Initialized i915 1.6.0 20190822 for 0000:00:02.0 on minor 0 [ 3.984428] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [ 3.985626] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input3 [ 3.993552] fbcon: i915drmfb (fb0) is primary device [ 3.995507] Console: switching to colour frame buffer device 240x67 [ 4.015529] i915 0000:00:02.0: fb0: i915drmfb frame buffer device I will try your suggested options (one after the other?) at my earliest convenience. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1179905 Stefan Dirsch <sndirsch@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sndirsch@suse.com -- You are receiving this mail because: You are on the CC list for the bug.
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