maintainer-feedback requested: [Bug 295567] graphics/drm-612-kmod panics HP 840 G5 laptop
| Newsgroups | gmane.os.freebsd.devel.x11 |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
Bugzilla Automation <[email protected]> has asked freebsd-x11 (Nobody) <[email protected]> for maintainer-feedback: Bug 295567: graphics/drm-612-kmod panics HP 840 G5 laptop https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295567 --- Description --- This is a strange bug. I will describe it first then offer my analysis (guess). drm-612-kmod will panic a very recent 16-CURRENT but only under strange circumstances. When the laptop is powered on (from a powered off state), when X loads (via xdm) the system will crash -- no panic string, just a long pause and a reboot. However if drm-66-kmod is installed when the laptop boots, drm-66-kmod is uninstalled, drm-612-kmod is installed, the laptop is rebooted, X starts. drm-612-kmod only works if it is installed after removal of drm-66-kmod and the laptop is NOT powered off. Only rebooted. My guess is that drm-66-kmod initializes the graphics hardware such that when drm-612-kmod subsequently uses it (after drm-66-kmod has been uninstalled, drm-612-kmod installed, and the laptop rebooted). But if drm-612-kmod was installed before the laptop was powered off I think drm-612-kmod fails to initialize the hardware correctly resulting the crash. This only affects my HP 840 G5. The Framework 13 (with AMD graphics) has no such problem.