Public bug reported:
This week I tried HDMI again on my system, and noticed it was completely broken.
Got just no signal on my screen.
I knew it was working some months (and upgrades) ago.
After testing I found out the issue was introduced between kernel v3.14 and
v3.15.
Situation:
Insert HDMI cable into my laptop, and no signal on the external display.
The dmesg fills with errors also:
[ 186.210622] nouveau E[ PDISP][0000:01:00.0] INVALID_STATE [UNK08] chid 0
mthd 0x0080 data 0x00000000
[ 186.210627] nouveau E[ PDISP][0000:01:00.0] Core:
[ 186.210634] nouveau E[ PDISP][0000:01:00.0] 0x0084: 0x5dc34da1 ->
0x80000000
[ 186.210640] nouveau E[ PDISP][0000:01:00.0] 0x0088: 0x00000000
etc.
After some git bisect playtime, I found out the following commit caused the
issue:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/nouveau?id=05c63c2ff23a80b654d6c088ac3ba21628db0173
So I went back to stable 3.16 (Ubuntu Utopic version), and did a git revert for
that commit.
And yep, HDMI output was working again, and no more nouveau errors in dmesg.
My device:
[ 30.823267] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0c1a00a1
[ 30.823269] nouveau [ DEVICE][0000:01:00.0] Chipset: GF108 (NVC1)
[ 30.823270] nouveau [ DEVICE][0000:01:00.0] Family : NVC0
Laptop dell xps 15 l502x
So this can be fixed with just reverting this commit. Else this is an
annoying regression in Utopic.
** Affects: linux
Importance: Unknown
Status: Unknown
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Bug watch added: freedesktop.org Bugzilla #84203
https://bugs.freedesktop.org/show_bug.cgi?id=84203
** Also affects: linux via
https://bugs.freedesktop.org/show_bug.cgi?id=84203
Importance: Unknown
Status: Unknown
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1374607
Title:
nouveau - HDMI gives no more signal since 3.15 (optimus)
Status in The Linux Kernel:
Unknown
Status in “linux” package in Ubuntu:
New
Bug description:
This week I tried HDMI again on my system, and noticed it was completely
broken.
Got just no signal on my screen.
I knew it was working some months (and upgrades) ago.
After testing I found out the issue was introduced between kernel v3.14 and
v3.15.
Situation:
Insert HDMI cable into my laptop, and no signal on the external display.
The dmesg fills with errors also:
[ 186.210622] nouveau E[ PDISP][0000:01:00.0] INVALID_STATE [UNK08] chid 0
mthd 0x0080 data 0x00000000
[ 186.210627] nouveau E[ PDISP][0000:01:00.0] Core:
[ 186.210634] nouveau E[ PDISP][0000:01:00.0] 0x0084: 0x5dc34da1 ->
0x80000000
[ 186.210640] nouveau E[ PDISP][0000:01:00.0] 0x0088: 0x00000000
etc.
After some git bisect playtime, I found out the following commit caused the
issue:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/nouveau?id=05c63c2ff23a80b654d6c088ac3ba21628db0173
So I went back to stable 3.16 (Ubuntu Utopic version), and did a git revert
for that commit.
And yep, HDMI output was working again, and no more nouveau errors in dmesg.
My device:
[ 30.823267] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0c1a00a1
[ 30.823269] nouveau [ DEVICE][0000:01:00.0] Chipset: GF108 (NVC1)
[ 30.823270] nouveau [ DEVICE][0000:01:00.0] Family : NVC0
Laptop dell xps 15 l502x
So this can be fixed with just reverting this commit. Else this is an
annoying regression in Utopic.
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/1374607/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
