Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
On Wed, Jul 30, 2014 at 12:01:38AM +0200, Jan Niggemann wrote: Am 29.07.2014 23:35, schrieb Daniel Vetter: On Tue, Jul 29, 2014 at 11:09 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I familiarized with git bisect, that was something I had never used before. I started it with git bisect start v3.15 v3.14 -- drivers/gpu/drm/i915 This lead me to this: cfa7c862982b431add7f2b362526bf31372fc7b0 is the first bad commit commit cfa7c862982b431add7f2b362526bf31372fc7b0 Author: Daniel Vetter daniel.vet...@ffwll.ch Date: Tue Apr 29 11:53:58 2014 +0200 drm/i915: Sanitize the enable_ppgtt module option once Otherwise we'll end up spamming dmesg on every context creation on snb with vt-d enabled. This regression was introduced in commit 246cbfb5fb9a1ca0997fbb135464c1ff5bb9c549 Author: Ben Widawsky benjamin.widaw...@intel.com Date: Fri Dec 6 14:11:14 2013 -0800 drm/i915: Reorganize intel_enable_ppgtt As the i915.enable_ppgtt is read-only it cannot be changed after the module is loaded and so we can perform an early sanitization of the values. v2: - Add comment and pimp commit message (Chris) - Use the param consistently (Jani) v3: - Fix init sequence on pre-gen6 by moving the sanitize_ppgtt call to gtt_init. Fixes boot hangs on pre-gen6. - Add a debug output for the sanitize ppgtt mode. References: https://lkml.org/lkml/2014/4/17/599 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77916 Cc: Alessandro Suardi alessandro.sua...@gmail.com Cc: Ben Widawsky b...@bwidawsk.net Cc: Chris Wilson ch...@chris-wilson.co.uk Reviewed-by: Chris Wilson ch...@chris-wilson.co.uk Signed-off-by: Daniel Vetter daniel.vet...@ffwll.ch Signed-off-by: Jani Nikula jani.nik...@intel.com :04 04 5488e397a1aaa28dca4a252452e9463b0a8f8d10 214c8e98b3c72844e48ab7aef02cba7daf139fab M drivers I realized that the issue does always show, contrary to the subject initially chosen. Unfortunately I can't say anything else, but maybe this will help you experts spot the issue. If I can help more, be it with testing or anything else, just let me know. Hm, I'm not aware of this breaking any gm45 machines, mine here is still happy. Can you please make sure that you don't have any i915 module options set anywhere, either on the kernel cmdline, modeprobe config files in /etc or anywhere else? My kernel cmdline doesn't have anything, but /etc/modprobe.d/i915-kms.conf exists. Its content is this single line: options i915 modeset=1 Can't remember if I created that (it's from 2010) or if it's Debian default... grep -Ri i915 /etc/ doesn't show anything else. grep 915 config-3.15 CONFIG_DRM_I915=m CONFIG_DRM_I915_KMS=y CONFIG_DRM_I915_FBDEV=y # CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT is not set # CONFIG_DRM_I915_UMS is not set CONFIG_SND_HDA_I915=y Would it help if I included the driver instead of building a module? Shouldn't change anything really, and config all looks sane. Can you please retest with latest upstream (3.16 or even drm-intel-nightly)? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Am 30.07.2014 11:33, schrieb Daniel Vetter: On Wed, Jul 30, 2014 at 12:01:38AM +0200, Jan Niggemann wrote: Am 29.07.2014 23:35, schrieb Daniel Vetter: On Tue, Jul 29, 2014 at 11:09 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I familiarized with git bisect, that was something I had never used before. I started it with git bisect start v3.15 v3.14 -- drivers/gpu/drm/i915 This lead me to this: cfa7c862982b431add7f2b362526bf31372fc7b0 is the first bad commit commit cfa7c862982b431add7f2b362526bf31372fc7b0 Author: Daniel Vetter daniel.vet...@ffwll.ch Date: Tue Apr 29 11:53:58 2014 +0200 drm/i915: Sanitize the enable_ppgtt module option once Otherwise we'll end up spamming dmesg on every context creation on snb with vt-d enabled. This regression was introduced in commit 246cbfb5fb9a1ca0997fbb135464c1ff5bb9c549 Author: Ben Widawsky benjamin.widaw...@intel.com Date: Fri Dec 6 14:11:14 2013 -0800 drm/i915: Reorganize intel_enable_ppgtt As the i915.enable_ppgtt is read-only it cannot be changed after the module is loaded and so we can perform an early sanitization of the values. v2: - Add comment and pimp commit message (Chris) - Use the param consistently (Jani) v3: - Fix init sequence on pre-gen6 by moving the sanitize_ppgtt call to gtt_init. Fixes boot hangs on pre-gen6. - Add a debug output for the sanitize ppgtt mode. References: https://lkml.org/lkml/2014/4/17/599 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77916 Cc: Alessandro Suardi alessandro.sua...@gmail.com Cc: Ben Widawsky b...@bwidawsk.net Cc: Chris Wilson ch...@chris-wilson.co.uk Reviewed-by: Chris Wilson ch...@chris-wilson.co.uk Signed-off-by: Daniel Vetter daniel.vet...@ffwll.ch Signed-off-by: Jani Nikula jani.nik...@intel.com :04 04 5488e397a1aaa28dca4a252452e9463b0a8f8d10 214c8e98b3c72844e48ab7aef02cba7daf139fab M drivers I realized that the issue does always show, contrary to the subject initially chosen. Unfortunately I can't say anything else, but maybe this will help you experts spot the issue. If I can help more, be it with testing or anything else, just let me know. Hm, I'm not aware of this breaking any gm45 machines, mine here is still happy. Can you please make sure that you don't have any i915 module options set anywhere, either on the kernel cmdline, modeprobe config files in /etc or anywhere else? My kernel cmdline doesn't have anything, but /etc/modprobe.d/i915-kms.conf exists. Its content is this single line: options i915 modeset=1 Can't remember if I created that (it's from 2010) or if it's Debian default... grep -Ri i915 /etc/ doesn't show anything else. grep 915 config-3.15 CONFIG_DRM_I915=m CONFIG_DRM_I915_KMS=y CONFIG_DRM_I915_FBDEV=y # CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT is not set # CONFIG_DRM_I915_UMS is not set CONFIG_SND_HDA_I915=y Would it help if I included the driver instead of building a module? Shouldn't change anything really, and config all looks sane. Didn't change anything indeed. Can you please retest with latest upstream (3.16 or even drm-intel-nightly)? Retested with drm-intel-nightly, this comes to a halt just before the first modeswitch. At least the screen didn't become blank - it displays: ACPI Warning: SystemIO range 0x1028-0x102f conflicts with OpRegion 0x1000-0x107f (\SB_.PCI0.LPC_.PMIO) (20140424/utaddress-258) ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver. ACPI Warning: SystemIO range 0x11b0-0x11bf conflicts with OpRegion 0x1180-0x11ff (\SB_.PCI0.LPC_.PMIO) (20140424/utaddress-258) ACPI: If an ACPI driver is available for this device, you should use it instead of
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I familiarized with git bisect, that was something I had never used before. I started it with git bisect start v3.15 v3.14 -- drivers/gpu/drm/i915 This lead me to this: cfa7c862982b431add7f2b362526bf31372fc7b0 is the first bad commit commit cfa7c862982b431add7f2b362526bf31372fc7b0 Author: Daniel Vetter daniel.vet...@ffwll.ch Date: Tue Apr 29 11:53:58 2014 +0200 drm/i915: Sanitize the enable_ppgtt module option once Otherwise we'll end up spamming dmesg on every context creation on snb with vt-d enabled. This regression was introduced in commit 246cbfb5fb9a1ca0997fbb135464c1ff5bb9c549 Author: Ben Widawsky benjamin.widaw...@intel.com Date: Fri Dec 6 14:11:14 2013 -0800 drm/i915: Reorganize intel_enable_ppgtt As the i915.enable_ppgtt is read-only it cannot be changed after the module is loaded and so we can perform an early sanitization of the values. v2: - Add comment and pimp commit message (Chris) - Use the param consistently (Jani) v3: - Fix init sequence on pre-gen6 by moving the sanitize_ppgtt call to gtt_init. Fixes boot hangs on pre-gen6. - Add a debug output for the sanitize ppgtt mode. References: https://lkml.org/lkml/2014/4/17/599 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77916 Cc: Alessandro Suardi alessandro.sua...@gmail.com Cc: Ben Widawsky b...@bwidawsk.net Cc: Chris Wilson ch...@chris-wilson.co.uk Reviewed-by: Chris Wilson ch...@chris-wilson.co.uk Signed-off-by: Daniel Vetter daniel.vet...@ffwll.ch Signed-off-by: Jani Nikula jani.nik...@intel.com :04 04 5488e397a1aaa28dca4a252452e9463b0a8f8d10 214c8e98b3c72844e48ab7aef02cba7daf139fab M drivers I realized that the issue does always show, contrary to the subject initially chosen. Unfortunately I can't say anything else, but maybe this will help you experts spot the issue. If I can help more, be it with testing or anything else, just let me know. Regards jan ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
On Tue, Jul 29, 2014 at 11:09 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I familiarized with git bisect, that was something I had never used before. I started it with git bisect start v3.15 v3.14 -- drivers/gpu/drm/i915 This lead me to this: cfa7c862982b431add7f2b362526bf31372fc7b0 is the first bad commit commit cfa7c862982b431add7f2b362526bf31372fc7b0 Author: Daniel Vetter daniel.vet...@ffwll.ch Date: Tue Apr 29 11:53:58 2014 +0200 drm/i915: Sanitize the enable_ppgtt module option once Otherwise we'll end up spamming dmesg on every context creation on snb with vt-d enabled. This regression was introduced in commit 246cbfb5fb9a1ca0997fbb135464c1ff5bb9c549 Author: Ben Widawsky benjamin.widaw...@intel.com Date: Fri Dec 6 14:11:14 2013 -0800 drm/i915: Reorganize intel_enable_ppgtt As the i915.enable_ppgtt is read-only it cannot be changed after the module is loaded and so we can perform an early sanitization of the values. v2: - Add comment and pimp commit message (Chris) - Use the param consistently (Jani) v3: - Fix init sequence on pre-gen6 by moving the sanitize_ppgtt call to gtt_init. Fixes boot hangs on pre-gen6. - Add a debug output for the sanitize ppgtt mode. References: https://lkml.org/lkml/2014/4/17/599 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77916 Cc: Alessandro Suardi alessandro.sua...@gmail.com Cc: Ben Widawsky b...@bwidawsk.net Cc: Chris Wilson ch...@chris-wilson.co.uk Reviewed-by: Chris Wilson ch...@chris-wilson.co.uk Signed-off-by: Daniel Vetter daniel.vet...@ffwll.ch Signed-off-by: Jani Nikula jani.nik...@intel.com :04 04 5488e397a1aaa28dca4a252452e9463b0a8f8d10 214c8e98b3c72844e48ab7aef02cba7daf139fab M drivers I realized that the issue does always show, contrary to the subject initially chosen. Unfortunately I can't say anything else, but maybe this will help you experts spot the issue. If I can help more, be it with testing or anything else, just let me know. Hm, I'm not aware of this breaking any gm45 machines, mine here is still happy. Can you please make sure that you don't have any i915 module options set anywhere, either on the kernel cmdline, modeprobe config files in /etc or anywhere else? -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Am 29.07.2014 23:35, schrieb Daniel Vetter: On Tue, Jul 29, 2014 at 11:09 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I familiarized with git bisect, that was something I had never used before. I started it with git bisect start v3.15 v3.14 -- drivers/gpu/drm/i915 This lead me to this: cfa7c862982b431add7f2b362526bf31372fc7b0 is the first bad commit commit cfa7c862982b431add7f2b362526bf31372fc7b0 Author: Daniel Vetter daniel.vet...@ffwll.ch Date: Tue Apr 29 11:53:58 2014 +0200 drm/i915: Sanitize the enable_ppgtt module option once Otherwise we'll end up spamming dmesg on every context creation on snb with vt-d enabled. This regression was introduced in commit 246cbfb5fb9a1ca0997fbb135464c1ff5bb9c549 Author: Ben Widawsky benjamin.widaw...@intel.com Date: Fri Dec 6 14:11:14 2013 -0800 drm/i915: Reorganize intel_enable_ppgtt As the i915.enable_ppgtt is read-only it cannot be changed after the module is loaded and so we can perform an early sanitization of the values. v2: - Add comment and pimp commit message (Chris) - Use the param consistently (Jani) v3: - Fix init sequence on pre-gen6 by moving the sanitize_ppgtt call to gtt_init. Fixes boot hangs on pre-gen6. - Add a debug output for the sanitize ppgtt mode. References: https://lkml.org/lkml/2014/4/17/599 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77916 Cc: Alessandro Suardi alessandro.sua...@gmail.com Cc: Ben Widawsky b...@bwidawsk.net Cc: Chris Wilson ch...@chris-wilson.co.uk Reviewed-by: Chris Wilson ch...@chris-wilson.co.uk Signed-off-by: Daniel Vetter daniel.vet...@ffwll.ch Signed-off-by: Jani Nikula jani.nik...@intel.com :04 04 5488e397a1aaa28dca4a252452e9463b0a8f8d10 214c8e98b3c72844e48ab7aef02cba7daf139fab M drivers I realized that the issue does always show, contrary to the subject initially chosen. Unfortunately I can't say anything else, but maybe this will help you experts spot the issue. If I can help more, be it with testing or anything else, just let me know. Hm, I'm not aware of this breaking any gm45 machines, mine here is still happy. Can you please make sure that you don't have any i915 module options set anywhere, either on the kernel cmdline, modeprobe config files in /etc or anywhere else? My kernel cmdline doesn't have anything, but /etc/modprobe.d/i915-kms.conf exists. Its content is this single line: options i915 modeset=1 Can't remember if I created that (it's from 2010) or if it's Debian default... grep -Ri i915 /etc/ doesn't show anything else. grep 915 config-3.15 CONFIG_DRM_I915=m CONFIG_DRM_I915_KMS=y CONFIG_DRM_I915_FBDEV=y # CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT is not set # CONFIG_DRM_I915_UMS is not set CONFIG_SND_HDA_I915=y Would it help if I included the driver instead of building a module? --jan ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Forgot to Cc the list, sorry. Am 18.07.2014 18:25, schrieb Daniel Vetter: On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). I now booted my custom 3.14.1 some 30 times, the issue didn't show once. It seems that it is indeed the 3.15 line that's borked. I uploaded my custom 3.14.1 and 3.15.1 config files here: http://files.hz6.de/kernel-configs-jn.tgz May this be related to this mail http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg42432.html fix freeze with blank screen booting highmem by Hugh Dickins? Kind regards jan ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
On Tue, Jul 22, 2014 at 11:25 PM, Jan Niggemann j...@hz6.de wrote: May this be related to this mail http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg42432.html fix freeze with blank screen booting highmem by Hugh Dickins? No, that's an issue only introduced in 3.16-rc1. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: Hi list, you were very helpful to nail down the interrupt storm issue a year ago, I hope we can track this down, too. I'm experiencing an issue with 3.15.5 on my Lenovo T400: When my machine boots, I can see some of the boot messages flying by (quite fast because the machine has a SSD). On a usual boot, the screen would go blank with the backlight off, come back on and other boot messages are visible in a different resolution. Finally the screen flickers once and shows the GDM login. Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. This happens with my custom built kernel 3.15.5 but not with the Debian standard kernel 3.2.0 and IIRC neither with my custom built 3.14 kernels. Would a drm debug log help and if so, what kernel parameters should I use to generate it? Your box seems to die in the initial modeset, which is done with the console_lock held. Which means any crashdumps in dmesg won't get out to netconsole or anything else unfortunately. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Hi Daniel, Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. Best regards jan ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
On Fri, Jul 18, 2014 at 4:49 PM, Jan Niggemann j...@hz6.de wrote: Am 18.07.2014 15:27, schrieb Daniel Vetter: On Thu, Jul 17, 2014 at 10:31:30PM +0200, Jan Niggemann wrote: I'm experiencing an issue with 3.15.5 on my Lenovo T400: Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. I think the only way to move forward here is to double-check that 3.14 works and 3.15 is broken by recompiling with the same .config (occasionally config changes cause regressions). And then do a full git bisect to find the offending commit. thank you for the feedback. I still have all my custom built kernels, I will test 3.14.0 through 3.14.8 to make sure those were OK and report back. You only need to test 3.14.0, since the backported fixes only contain a very small subset of all patches for 3.15. So it's more efficient to then switch to git bisect between 3.14 and 3.15 directly (after you've confirmed that 3.15.0 is indeed busted). -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
[Intel-gfx] i915 / 3.15 intermittently boots into blank screeen
Hi list, you were very helpful to nail down the interrupt storm issue a year ago, I hope we can track this down, too. I'm experiencing an issue with 3.15.5 on my Lenovo T400: When my machine boots, I can see some of the boot messages flying by (quite fast because the machine has a SSD). On a usual boot, the screen would go blank with the backlight off, come back on and other boot messages are visible in a different resolution. Finally the screen flickers once and shows the GDM login. Since 3.15 (or 3.14, can't say for sure), the boot starts normally, but the first mode change doesn't occur, resulting in a black screen with backlight on. The system is entirely unresponsive and I can only press the power button until to switch it off. This happens with my custom built kernel 3.15.5 but not with the Debian standard kernel 3.2.0 and IIRC neither with my custom built 3.14 kernels. Would a drm debug log help and if so, what kernel parameters should I use to generate it? System environment Lenovo T400, GM45 Express Chipset, custom-built kernel 3.15.5 on Debian 7.5 /32bit, built-in LCD, issue happens 3 boots out of 4. Best regards Jan ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
