[Bug 1085806] New: [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training
http://bugzilla.suse.com/show_bug.cgi?id=1085806 Bug ID: 1085806 Summary: [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.3 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: jnwang@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- uname -r 4.4.120-8.g7186d16-default [12134.670905] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training [12134.755941] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to start channel equalization [12134.837753] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [12135.307256] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [12197.851460] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [12198.225571] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [12213.764182] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.suse.com/show_bug.cgi?id=1085806
http://bugzilla.suse.com/show_bug.cgi?id=1085806#c1
Takashi Iwai
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http://bugzilla.suse.com/show_bug.cgi?id=1085806#c2
--- Comment #2 from James Wang
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http://bugzilla.suse.com/show_bug.cgi?id=1085806#c3
--- Comment #3 from James Wang
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http://bugzilla.suse.com/show_bug.cgi?id=1085806#c4
--- Comment #4 from Takashi Iwai
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http://bugzilla.suse.com/show_bug.cgi?id=1085806#c5
--- Comment #5 from James Wang
And you're not using drm-kmp in both old and new kernels, right? Please check it at first.
Actually, Trying it............first...... I delete drm-kmp since you said, at least now, dmesg is clean.
If so, and the issue is seen on 4.16-rc, it's likely a regression in the upstream and that was taken to 4.4.x stable. Please report it to upstream, bugzilla.freedesktop.org.
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http://bugzilla.suse.com/show_bug.cgi?id=1085806#c6
--- Comment #6 from Takashi Iwai
(In reply to Takashi Iwai from comment #4)
And you're not using drm-kmp in both old and new kernels, right? Please check it at first.
Actually, Trying it............first...... I delete drm-kmp since you said, at least now, dmesg is clean.
Hm, so this is only with drm-kmp? Then better to add zypper lock not to drag this package any longer. zypper al drm-kmp-default
If so, and the issue is seen on 4.16-rc, it's likely a regression in the upstream and that was taken to 4.4.x stable. Please report it to upstream, bugzilla.freedesktop.org.
And this still holds, even if it's not a recent regression. Without reporting to upstream, there will be no fix, after all... -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.suse.com/show_bug.cgi?id=1085806
http://bugzilla.suse.com/show_bug.cgi?id=1085806#c7
--- Comment #7 from James Wang
(In reply to James Wang from comment #5)
(In reply to Takashi Iwai from comment #4)
And you're not using drm-kmp in both old and new kernels, right? Please check it at first.
Actually, Trying it............first...... I delete drm-kmp since you said, at least now, dmesg is clean.
Hm, so this is only with drm-kmp? Then better to add zypper lock not to drag this package any longer.
zypper al drm-kmp-default
got it. Remove it whether will impact performance ?
If so, and the issue is seen on 4.16-rc, it's likely a regression in the upstream and that was taken to 4.4.x stable. Please report it to upstream, bugzilla.freedesktop.org.
And this still holds, even if it's not a recent regression. Without reporting to upstream, there will be no fix, after all...
en.......ok, -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.suse.com/show_bug.cgi?id=1085806
http://bugzilla.suse.com/show_bug.cgi?id=1085806#c8
--- Comment #8 from Takashi Iwai
(In reply to Takashi Iwai from comment #6)
(In reply to James Wang from comment #5)
(In reply to Takashi Iwai from comment #4)
And you're not using drm-kmp in both old and new kernels, right? Please check it at first.
Actually, Trying it............first...... I delete drm-kmp since you said, at least now, dmesg is clean.
Hm, so this is only with drm-kmp? Then better to add zypper lock not to drag this package any longer.
zypper al drm-kmp-default
got it. Remove it whether will impact performance ?
Not really. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.suse.com/show_bug.cgi?id=1085806
http://bugzilla.suse.com/show_bug.cgi?id=1085806#c9
Tomáš Chvátal
http://bugzilla.suse.com/show_bug.cgi?id=1085806
http://bugzilla.suse.com/show_bug.cgi?id=1085806#c10
James Wang
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