Public bug reported:
Screen periodically turns off for ~1 second, then returns. Repeats
indefinitely and happens on clean install of newer kernel (7.x series).
Does NOT happen on 6.8 kernel, nomodeset stops issue but then you can't
use normal display resolutions (only 800x600 available).
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-15-generic 7.0.0-15.15
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k7.0.0-15-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: softpos 1477 F.... pipewire
softpos 1484 F.... wireplumber
/dev/snd/pcmC0D0p: softpos 1477 F...m pipewire
/dev/snd/seq: softpos 1477 F.... pipewire
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Date: Mon May 25 11:01:14 2026
MachineType: FIRICH J1900
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic
root=UUID=8f2803ea-e42b-403b-8124-7888d3c92b77 ro
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/18/2017
dmi.bios.release: 5.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F8
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: J1900
dmi.board.vendor: FIRICH
dmi.board.version: 1.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: FIRICH
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF8:bd01/18/2017:br5.6:svnFIRICH:pnJ1900:pvr1.x:rvnFIRICH:rnJ1900:rvr1.x:cvnFIRICH:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: J1900
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.x
dmi.sys.vendor: FIRICH
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2154166
Title:
Periodic screen blanking with Linux kernel 7.x
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