| 2012-08-24 17:48:37 |
James M. Leddy |
bug |
|
|
added bug |
| 2012-08-24 18:00:08 |
Brad Figg |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2012-08-24 18:08:17 |
James M. Leddy |
description |
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
1. These laptops are pre-installed with Oneiric
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (supposedly)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (supposedly)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
|
| 2012-08-24 19:30:22 |
James M. Leddy |
bug |
|
|
added subscriber Canonical Hardware Enablement Team |
| 2012-08-24 19:30:24 |
James M. Leddy |
tags |
|
blocks-hwcert-enablement |
|
| 2012-08-27 15:17:16 |
Joseph Salisbury |
linux (Ubuntu): importance |
Undecided |
Medium |
|
| 2012-08-27 15:18:30 |
Joseph Salisbury |
linux (Ubuntu): status |
Incomplete |
Triaged |
|
| 2012-08-27 15:18:54 |
Joseph Salisbury |
tags |
blocks-hwcert-enablement |
blocks-hwcert-enablement oneiric |
|
| 2012-08-29 18:52:37 |
James M. Leddy |
nominated for series |
|
Ubuntu Oneiric |
|
| 2012-08-29 18:52:39 |
James M. Leddy |
nominated for series |
|
Ubuntu Precise |
|
| 2012-09-07 12:50:02 |
James Ferguson |
description |
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (supposedly)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (see comment #3)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
|
| 2012-10-18 03:49:27 |
Jamie Chang |
bug task added |
|
oem-priority |
|
| 2012-10-18 03:50:12 |
Jamie Chang |
bug |
|
|
added subscriber OEM Priority Team |
| 2012-10-18 03:50:32 |
Jamie Chang |
oem-priority: importance |
Undecided |
Critical |
|
| 2012-10-19 17:12:20 |
Anthony Wong |
linux (Ubuntu): importance |
Medium |
Critical |
|
| 2012-10-19 17:12:34 |
Anthony Wong |
linux (Ubuntu): assignee |
|
Timo Aaltonen (tjaalton) |
|
| 2012-10-22 10:14:15 |
Timo Aaltonen |
bug task added |
|
linux (Ubuntu Oneiric) |
|
| 2012-10-22 10:19:22 |
Timo Aaltonen |
linux (Ubuntu Oneiric): importance |
Undecided |
Critical |
|
| 2012-10-22 10:19:22 |
Timo Aaltonen |
linux (Ubuntu Oneiric): status |
New |
In Progress |
|
| 2012-10-22 10:19:32 |
Timo Aaltonen |
linux (Ubuntu Oneiric): assignee |
|
Timo Aaltonen (tjaalton) |
|
| 2012-10-22 10:19:53 |
Timo Aaltonen |
linux (Ubuntu): status |
Triaged |
Fix Released |
|
| 2012-10-22 10:19:53 |
Timo Aaltonen |
linux (Ubuntu): assignee |
Timo Aaltonen (tjaalton) |
|
|
| 2012-10-22 11:13:53 |
Timo Aaltonen |
description |
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (see comment #3)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
SRU justification:
Impact:
Commit "628280f36e4fdbd drm/i915: Sanitize BIOS debugging bits from PIPECONF" got in the oneiric kernel via upstream, since it fixed a similar issue as here with an earlier version of the intel VBIOS. With a newer VBIOS however, the issue is back. Simply reverting the commit would likely mean breaking other setups.
this is a critical bug for some our OEM's
Fix:
upstream patch 3bcf603f6d5d18b from 3.1 works around a bug in the CPT/PPT PCH chips, and it was bisected as the commit that fixes the bug in 3.1 and up.
Testcase:
boot a kernel that doesn't have 3bcf603f6d5d18b but has 628280f36e4fdbd
on hw that has a "new enough" VBIOS.
--
Issue Description
-----------------
Garbage green lines (4-5 pixel lines) appear on top of some Lenovo laptops'
screens, persist from boot splash screen to desktop running.
Collected Data
--------------
Attached are the kernel dmesg, Xorg.0.log and dump files by intel_reg_dumper
for oneiric installation with kernel version 3.0.0-19.33 and 3.0.0-20.34, and
for precise installation with kernel version 3.2.0-23.26.
Observations
------------
2. This issue only happens on Oneiric with kernel version 3.0.0-20.34
and later ones
3. This issue does not happen on Oneiric with kernel version
3.0.0-19.33 and previous ones
4. This issue does not happen on Precise (12.04) with kernel version 3.2.0-23.36
5. This issue is caused by the upstream commit below:
f47166d2 drm/i915: Sanitize BIOS debugging bits from PIPECONF
The rationale and original bug description for the above commit can be
found at https://bugs.freedesktop.org/show_bug.cgi?id=47271
6. This issue would be gone if the above commit is reverted on Oneiric kernel
version 3.0.0-19.33 and later ones
7. There is one other commit below which fixed an issue of the above commit
in later kernel version, BUT this commit was verified to have nothing to
do with the issue here:
a9dcf84b drm/i915: don't clobber the pipe param in sanitize_modesetting
8. This issue was reported to be related to BIOS version as well (see comment #3)
9. There is a WARN_ON() oops on Oneiric with both kernel versions, but this is
supposedly an unrelated seperate issue, as it happens in both cases, but
presumably fixed in Precise.
10. By comparing the dump contents between two kernels running on Oneiric, the
significant difference is the PIPEACONF register
11. By comparing the dump contents between oneiric and precise, there are many
more registers with different values
Summary
-------
We are able to identify the guilty commit, and are able to provide a workaround
by reverting the commit or by doing PIPECONF register change for non-relevant
machines. However, we are not able to form a correct theory to explain exactly
the above observations and to shape a correct patch to fix the root cause. |
|
| 2012-10-22 11:14:09 |
Timo Aaltonen |
bug watch added |
|
https://bugs.freedesktop.org/show_bug.cgi?id=56089 |
|
| 2012-10-22 11:14:09 |
Timo Aaltonen |
bug task added |
|
linux |
|
| 2012-10-22 20:16:20 |
Tim Gardner |
linux (Ubuntu Oneiric): status |
In Progress |
Fix Committed |
|
| 2012-10-22 22:04:04 |
James M. Leddy |
oem-priority: status |
New |
Invalid |
|
| 2012-10-23 05:33:41 |
Bug Watch Updater |
linux: status |
Unknown |
Fix Released |
|
| 2012-10-23 05:33:41 |
Bug Watch Updater |
linux: importance |
Unknown |
Medium |
|
| 2012-11-16 20:00:35 |
James M. Leddy |
linux (Ubuntu Oneiric): status |
Fix Committed |
Fix Released |
|
| 2012-11-16 20:00:53 |
James M. Leddy |
linux (Ubuntu Oneiric): status |
Fix Released |
Fix Committed |
|
| 2012-11-19 13:41:37 |
Herton R. Krzesinski |
tags |
blocks-hwcert-enablement oneiric |
blocks-hwcert-enablement oneiric verification-done-oneiric |
|
| 2012-11-28 22:53:09 |
Launchpad Janitor |
linux (Ubuntu Oneiric): status |
Fix Committed |
Fix Released |
|
| 2012-11-28 22:53:09 |
Launchpad Janitor |
cve linked |
|
2012-0957 |
|
| 2012-11-28 22:53:09 |
Launchpad Janitor |
cve linked |
|
2012-4565 |
|
| 2013-05-07 17:21:21 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/lucid-security/linux-lts-backport-oneiric |
|
| 2013-05-08 02:31:25 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/oneiric-security/linux-ti-omap4 |
|
| 2014-01-15 15:13:22 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/lucid-proposed/linux-lts-backport-oneiric |
|
| 2014-01-15 21:39:30 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/lucid-updates/linux-lts-backport-oneiric |
|
