So what happens when you use i915.alpha_support=1 without nomodeset?
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https://bugs.launchpad.net/bugs/1931475
Title:
Ubuntu only stable in safe graphics mode
Status in linux package in Ubuntu:
Incomplete
Bug description:
Brand new machine, Intel i5, Brand new install of 20.04 ubuntu using
5.11.0-18 kernel. BIOS updated to recent firmware. (5/11/2021 date)
Machine will only stay running in safe graphics mode. When booting
normal, GUI loads for about 5 seconds then reboots.
ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xorg 1:7.7+22ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-18.19-generic 5.11.17
Uname: Linux 5.11.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 9 14:04:22 2021
DistUpgraded: Fresh install
DistroCodename: hirsute
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation CometLake-S GT2 [UHD Graphics 630] [8086:9bc5] (rev 05)
(prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:8694]
InstallationDate: Installed on 2021-06-09 (0 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 413c:2003 Dell Computer Corp. Keyboard SK-8115
Bus 001 Device 002: ID 046d:c408 Logitech, Inc. Marble Mouse (4-button)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 7: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid,
1.5M
|__ Port 8: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid,
1.5M
MachineType: ASUS System Product Name
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-18-generic
root=UUID=5e92baa8-faf7-43e0-ab03-c43a1ec8a549 ro recovery nomodeset
dis_ucode_ldr text
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/07/2021
dmi.bios.release: 16.5
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1605
dmi.board.asset.tag: Default string
dmi.board.name: PRIME B460-PLUS
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1605:bd04/07/2021:br16.5:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEB460-PLUS:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: ASUS
mtime.conffile..etc.apport.crashdb.conf: 2021-06-09T13:25:26.012453
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.104-1build1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.1-2
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200714-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1
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