어제 아래와 같이 mesa 와 vulkan 관련 패키지를 업데이트 했습니다.

[code][2025-12-06T13:39:51+0900] [ALPM] upgraded mesa (1:25.2.7-1 -> 1:25.3.1-2)

[2025-12-06T13:39:51+0900] [ALPM] upgraded vulkan-dzn (1:25.2.7-1 -> 1:25.3.1-2)

[2025-12-06T13:39:51+0900] [ALPM] upgraded vulkan-radeon (1:25.2.7-1 -> 1:25.3.1-2)[/code]

하지만 오늘 컴퓨터를 부팅해보니 너무나도 불안정해서 뭘 할 수가 없더군요.

따라서 sway 를 디버그 모드로 실행해 봤는데 유의미한 로그를 건질 수 있었습니다.

[code]wl_display_dispatch: Broken pipe

err: wayland.c:1675: failed to read events from the Wayland socketGdk-Message: 17:42:06.858: Error reading events from display: Broken pipe

: Broken pipe

err: wayland.c:1675: failed to read events from the Wayland socket: Connection reset by peer

Gdk-Message: 17:42:06.858: Error reading events from display: Broken pipe

W2025-12-07 17:42:06.858999 xcbeventreader.cpp:52] XCB connection ":1" got error: 1

Gdk-Message: 17:42:06.859: Error reading events from display: Broken pipe

Gdk-Message: 17:42:06.860: Error reading events from display: Broken pipe

Gdk-Message: 17:42:06.860: Lost connection to Wayland compositor.

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

err: wayland.c:2318: failed to roundtrip Wayland display: Broken pipe

err: wayland.c:2318: failed to roundtrip Wayland display: Broken pipe

err: wayland.c:2318: failed to roundtrip Wayland display: Broken pipe

err: wayland.c:1675: failed to read events from the Wayland socket: Connection reset by peer

could not connect to wayland server

(EE)

Fatal server error:

(EE) Couldn't add screen

(EE)

I2025-12-07 17:42:06.864563 waylandmodule.cpp:365] Connection removed

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

err: wayland.c:2318: failed to roundtrip Wayland display: Connection reset by peer

I2025-12-07 17:42:06.893582 addonmanager.cpp:306] Unloading addons (12 lines collapsed)

W2025-12-07 17:42:06.907072 xcbconnection.cpp:251] Can not convert keyval=32 to keycode!

I2025-12-07 17:42:06.907460 addonmanager.cpp:306] Unloading addon wayland

err: wayland.c:2283: failed to flush wayland socket: Connection reset by peer

err: wayland.c:2283: failed to flush wayland socket: Broken pipe

err: wayland.c:2283: failed to flush wayland socket: Connection reset by peer

========== RESTART ==========

00:00:00.000 [INFO] [sway/main.c:321] Sway version 1.11

00:00:00.000 [INFO] [sway/main.c:322] wlroots version 0.19.0

00:00:00.001 [INFO] [sway/main.c:78] Linux hm-iMac 6.17.9-arch1-1 #1 SMP PREEMPT_DYNAMIC Mon, 24 Nov 2025 15:21:09 +0000 x86_64 GNU/Linux

00:00:00.001 [INFO] [sway/main.c:94] Contents of /etc/lsb-release:

00:00:00.001 [INFO] [sway/main.c:78] DISTRIB_ID="EndeavourOS"

00:00:00.001 [INFO] [sway/main.c:78] DISTRIB_RELEASE="rolling"

00:00:00.001 [INFO] [sway/main.c:78] DISTRIB_DESCRIPTION="EndeavourOS Linux"

00:00:00.001 [INFO] [sway/main.c:78] DISTRIB_CODENAME="rolling"[/code]

그래서 ChatGPT 랑 원인을 조사하다 결국 downgrade 명령을 사용해서 이전 버전으로 롤백했습니다.

다운그래이드를 하니 다시 sway 가 잘 작동해서 편안하네요.

잘 작동하는 건 둘째치고, 문제가 발생한 이유가 뭔지 알아보기 위해 업데이트를 다시 시도해 보니, 아래와 같이 의존성을 변경하더군요.

[code]:: vulkan-mesa-device-select-1:25.2.7-1 and vulkan-mesa-implicit-layers-1:25.3.1-2 are in conflict. Remove vulkan-mesa-implicit-layers? [y/N][/code]

알아보니 device-select 가 implicit-layers 라는 새로운 패키지로 변경되었다고 하는데, 이것때문에 sway가 불안정해진 것으로 강하게 의심됩니다.

따라서 아래와 같이 pacman.conf 에 일시적으로 무시하도록 패키지들을 추가해 줬네요

[code]# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup

IgnorePkg = vulkan-mesa-implicit-layers mesa vulkan-dzn vulkan-radeon[/code]

추신: sway dump 파일은 하단에 첨부해 두었으니 분석하고 싶으신분은 한번 확인해 보시길 바랍니다.