Having this same issue on an NVIDIA, what should I change on GRUB since you mentioned ?
error log:
[2026.07.12-21.57.30:399][ 57]LogProjectBrowser: Enumerating Launcher Sample Projects...
[2026.07.12-21.57.30:410][ 57]ImportText (Variants): Missing closing parenthesis: (Name="TwinStick",LocalizedDisplayNames=((Language="en",Text="Twin Stick"),(Language="ja",Text="ツインスティック"),(Language="ko",Text="트윈 스틱"),(Language="zh-Hans",Text="双摇杆游戏模板")),LocalizedDescriptions=((Language="en",Text="A twin stick shooter game with infinitely spawning enemies."),(Language="ja",Text="敵が無限にスポーンするツイン スティック シューティング ゲーム"),(Language="ko",Text="무한히 생성되는 적을 상대하는 트윈 스틱 슈팅 게임입니다."),(Language="zh-Hans",Text="一款双摇杆设计游戏，具有无限刷新的敌人。")),SharedContentPacks=((DetailLevels=(Standard),MountName="Variant_TwinStick"),(MountName="Input",DetailLevels=("High")))
[2026.07.12-21.57.30:410][ 57]ImportText (Variants): Missing closing parenthesis: (Name="All",LocalizedDisplayNames=((Language="en",Text="All"),(Language="ja",Text="All (全員)"),(Language="ko",Text="모두"),(Language="zh-Hans",Text="全部")),LocalizedDescriptions=((Language="en",Text="Includes all Top Down variants."),(Language="ja",Text="すべてのトップダウン バリアントが含まれています"),(Language="ko",Text="모든 탑 뷰 베리언트를 포함합니다."),(Language="zh-Hans",Text="包含全部第三人称模板变体。")),SharedContentPacks=((DetailLevels=(Standard),MountName="Variant_TwinStick"),(DetailLevels=(Standard),MountName="Variant_Strategy"),(MountName="Input",DetailLevels=("High")))
[2026.07.12-21.57.30:625][ 61]LogVulkanRHI: Error: Result failed, VkResult=-4
at ./Runtime/VulkanRHI/Private/VulkanSynchronization.cpp:136
with error VK_ERROR_DEVICE_LOST
[2026.07.12-21.57.30:625][ 61]LogVulkanRHI: Error: Shader diagnostic messages and asserts:
Device: 0, Queue Graphics:
No shader diagnostics found for this queue.
Device: 0, Queue AsyncCompute:
No shader diagnostics found for this queue.
[2026.07.12-21.57.30:625][ 61]LogVulkanRHI: Error:
DEVICE FAULT REPORT:
* Description:
* Address Info:
* Vendor Info:
* Vendor Binary Size: 0
[2026.07.12-21.57.30:625][ 61]LogRHI: Error: Active GPU breadcrumbs:
Device 0, Pipeline Graphics: (In: 0x80003258, Out: 0x80003257)
(ID: 0x80003250) [ Active] Frame 1059
(ID: 0x80003257) [ Active] EndDrawingViewport
(ID: 0x80003258) [ Active] EndDrawingViewport
Device 0, Pipeline AsyncCompute: (In: 0x80003256, Out: 0x80003256)
No breadcrumb nodes found for this queue.
[2026.07.12-21.57.30:625][ 61]LogCore: FUnixPlatformMisc::RequestExit(1, FVulkanDynamicRHI.TerminateOnGPUCrash)
Also, people are looking into UE 5.8 Release - Instant Vulkan Crash (VK_ERROR_DEVICE_LOST) on Linux with RTX 3090 Ti / NVIDIA Driver