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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Loading i915 kernel module breaks NVMe PCI device on the new Coffee Lake box"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108546#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Loading i915 kernel module breaks NVMe PCI device on the new Coffee Lake box"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108546">bug 108546</a>
from <span class="vcard"><a class="email" href="mailto:tiwai@suse.de" title="Takashi Iwai <tiwai@suse.de>"> <span class="fn">Takashi Iwai</span></a>
</span></b>
<pre>BTW, another workaround for this issue is to enforce LSPCON:
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -2120,6 +2120,7 @@ intel_bios_is_lspcon_present(struct drm_i915_private
*dev_priv,
if (!HAS_LSPCON(dev_priv))
return false;
+ return true;
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
child = dev_priv->vbt.child_dev + i;
Then the NVMe and AER errors are gone, plus, even the dead DP becomes working!</pre>
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