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Disable the kernel CRTC when DPMS Mode OFF is called

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If the CRTC is supposed to be disabled we need to inform the kernel.

Fixes a bug where a secondary screen is left blank, but enabled, when
switching from two displays to one.

Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
This commit is contained in:
Ian Forbes
2024-10-17 15:03:52 -05:00
parent a20aaf5823
commit 6eba4505da
1 changed files with 3 additions and 1 deletions
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4
vmwgfx/vmwgfx_crtc.c
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@@ -72,7 +72,8 @@ static void
crtc_dpms(xf86CrtcPtr crtc, int mode)
{
struct crtc_private *crtcp = crtc->driver_private;
/* ScrnInfoPtr pScrn = crtc->scrn; */
modesettingPtr ms = modesettingPTR(crtc->scrn);
drmModeCrtcPtr drm_crtc = crtcp->drm_crtc;
switch (mode) {
case DPMSModeOn:
@@ -93,6 +94,7 @@ crtc_dpms(xf86CrtcPtr crtc, int mode)
* another dpms call, so don't release the scanout pixmap ref.
*/
if (!crtc->enabled && crtcp->entry.pixmap) {
drmModeSetCrtc(ms->fd, drm_crtc->crtc_id, 0, 0, 0, NULL, 0, NULL);
vmwgfx_scanout_unref(&crtcp->entry);
}
break;