[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Changed in: linux (Ubuntu Intrepid) Status: Fix Released = Fix Committed ** Changed in: linux (Ubuntu Intrepid) Status: Fix Committed = Fix Released -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Ok Stefan, I've already done it. Hope it would help Wish to hear good news Thanks again Pablo 2009/11/26 Stefan Bader stefan.ba...@canonical.com Hi Pablo, sorry for responding that late. The boot option (acpi_video_strict_detect=0) is only useful in Jaunty. Karmic is less restrictive by default and from the dmesg I see that the acpi video driver detects a gfx device. So in all this looks like a different problem and it should get into a new bug report (beside this one being so big one can hardy find information). So can you please open a new bug by calling ubuntu-bug linux on the command line. This will gather basic information and opens the bug. Give it a description like Acer your laptop model: Cannot change brightness (at all | with hotkeys). Then attach the output of - sudo acpidump -o acpidump.txt - grep -r . /proc/acpi/video acpi-video.txt And finally assign me to that bug. You can also try to use acpi_backlight=vendor on the grub commandline and if that changes anything, please note that in the new bug as well. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in “linux” source package in Intrepid: Fix Released Status in “linux” source package in Jaunty: Fix Released Status in “linux” source package in Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Hi Pablo, sorry for responding that late. The boot option (acpi_video_strict_detect=0) is only useful in Jaunty. Karmic is less restrictive by default and from the dmesg I see that the acpi video driver detects a gfx device. So in all this looks like a different problem and it should get into a new bug report (beside this one being so big one can hardy find information). So can you please open a new bug by calling ubuntu-bug linux on the command line. This will gather basic information and opens the bug. Give it a description like Acer your laptop model: Cannot change brightness (at all | with hotkeys). Then attach the output of - sudo acpidump -o acpidump.txt - grep -r . /proc/acpi/video acpi-video.txt And finally assign me to that bug. You can also try to use acpi_backlight=vendor on the grub commandline and if that changes anything, please note that in the new bug as well. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Tonight I upgrade the kernel with the last version for Karmic. It said there was a solution for the brightness problem but it didn't work. I've tried with and without the acpi_video_strict_detect=0 option and nothing changed. I keep waiting for a solution. Thanks for your efforts. 2009/11/24 Pablo Javier Ferrari Ferrando pjfe...@gmail.com 2009/11/17 Pablo Javier Ferrari Ferrando pjfe...@gmail.com Dear Stefan, I've installed Karmic from new and the bringhtness problem persists. But now I can't find the menu.lst file to set the boot option. Before installing, I had tried to go back to the last patched kernel version with dkpg. I successfully changed the kernel, but the brightness control didn't come back. I'm attaching the dmesg output. My eyes will thank your efforts. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
2009/11/17 Pablo Javier Ferrari Ferrando pjfe...@gmail.com Dear Stefan, I've installed Karmic from new and the bringhtness problem persists. But now I can't find the menu.lst file to set the boot option. Before installing, I had tried to go back to the last patched kernel version with dkpg. I successfully changed the kernel, but the brightness control didn't come back. I'm attaching the dmesg output. My eyes will thank your efforts. ** Attachment added: dmesg.log http://launchpadlibrarian.net/36020231/dmesg.log -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Dear Stefan, I've installed Karmic from new and the bringhtness problem persists. But now I can't find the menu.lst file to set the boot option. Before installing, I had tried to go back to the last patched kernel version with dkpg. I successfully changed the kernel, but the brightness control didn't come back. I'm attaching the dmesg output. My eyes will thank your efforts. ** Attachment added: dmesg.log http://launchpadlibrarian.net/35786418/dmesg.log -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@Stefan Bader: I can confirm bug is definitely solved with Koala Karmic x64 out-of-the- box. Really great job, well done. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Pablo wrote: Sorry for getting back that late. Reading the dmesg log I founded this in line #34: [0.00] Phoenix BIOS detected: BIOS may corrupt low RAM, working it around. Does it mean is there anything wrong with my laptop's BIOS or RAM? Sort of. It is a common problem that some BIOS are using parts of the lower RAM as storage and the kernel just marks a certain area of the memory as not usable to work around this. So your RAM is ok, your BIOS just happens to be one that does use a bit of the lower memory but you should be alright with that. Have you done any progress on the brightness problem? I'm about installing Karmic beta to test it and will tell you what happens I have not have time to specifically work on this. However, all the changes went upstream and into Karmic. Actually a few more. So you should definitely try Karmic. Also, as we move ahead, things that are not really critical will not get fixed in Jaunty. Even Karmic will receive a little less care as the main effort goes into making the next LTS. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Dear Stefan, Reading the dmesg log I founded this in line #34: [0.00] Phoenix BIOS detected: BIOS may corrupt low RAM, working it around. Does it mean is there anything wrong with my laptop's BIOS or RAM? Have you done any progress on the brightness problem? I'm about installing Karmic beta to test it and will tell you what happens 2009/10/13 Pablo Javier Ferrari Ferrando pjfe...@gmail.com Attached... 2009/10/12 Stefan Bader stefan.ba...@canonical.com @Pablo, looking at your dmesg it seems you got the option correctly set and it is using the less restrictive mode for the brightness control. So acer-wmi leaves that untouched. Now, when running exactly that mode, can you do a sudo grep -r . /proc/acpi/video and attach that output as well? -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Attached... 2009/10/12 Stefan Bader stefan.ba...@canonical.com @Pablo, looking at your dmesg it seems you got the option correctly set and it is using the less restrictive mode for the brightness control. So acer-wmi leaves that untouched. Now, when running exactly that mode, can you do a sudo grep -r . /proc/acpi/video and attach that output as well? -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. ** Attachment added: grep http://launchpadlibrarian.net/33588369/grep -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@Pablo, looking at your dmesg it seems you got the option correctly set and it is using the less restrictive mode for the brightness control. So acer-wmi leaves that untouched. Now, when running exactly that mode, can you do a sudo grep -r . /proc/acpi/video and attach that output as well? -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Please attach the ouput of dmesg (while using one of the two ways of specifying the options) and attach it here. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
If you prefer, here is attached 2009/10/9 Stefan Bader stefan.ba...@canonical.com Please attach the ouput of dmesg (while using one of the two ways of specifying the options) and attach it here. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. ** Attachment added: dm http://launchpadlibrarian.net/33378663/dm -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Temporary in Jaunty, when you see the grub screen go to the kernel you want to boot, type e, go to the (I think 3rd) line containing the quiet splash and press e again, then add the argument and press enter, then b. Permanent sudo vi /boot/grub/menu.lst then add it to the commented line defoptions=quiet splash. After that is saved run sudo update-grub -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Dear Stefan, Thanks for your time, but unfortunately it didn't worked. I've tried both ways (temporary and permanent) By the way, I noticed another slight change: when connect or disconnect the power adapter it no longer shows the upper right message showing that brightness had been changed I wait for more instructions to going on trying solutions. (forgive my english if it's not very clear) 2009/10/9 Stefan Bader stefan.ba...@canonical.com Temporary in Jaunty, when you see the grub screen go to the kernel you want to boot, type e, go to the (I think 3rd) line containing the quiet splash and press e again, then add the argument and press enter, then b. Permanent sudo vi /boot/grub/menu.lst then add it to the commented line defoptions=quiet splash. After that is saved run sudo update-grub -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Where should I type the acpi_video_strict_detect=0 option? You'll see I'm not very experimented user... Thanks 2009/10/3 Stefan Bader stefan.ba...@canonical.com @Pablo, sorry to hear that and strange. Because the patch should be included in -15.52 as far as I can see. Do you get a message when doing dmesg |grep 'less restr'? If not, you might try to boot with acpi_video_strict_detect=0 and see whether that helps. Maybe you had a version installed, that did not do a check for a certain system (I already wondered why the latest one worked for you as you had a slightly different laptop, iirc). Going back to that kernel version should work with dpkg -i but on the other hand would keep you from getting any updates that came along with the newer version. Please let me know whether the boot option above helps. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Dear Stefan, I've tried dmseg | grep 'less restr' as you suggested and got nothing. Where should I type the acpi_video_strict_detect=0 option? You'll see I'm not very experimented user... Thanks 2009/10/3 Stefan Bader stefan.ba...@canonical.com @Pablo, sorry to hear that and strange. Because the patch should be included in -15.52 as far as I can see. Do you get a message when doing dmesg |grep 'less restr'? If not, you might try to boot with acpi_video_strict_detect=0 and see whether that helps. Maybe you had a version installed, that did not do a check for a certain system (I already wondered why the latest one worked for you as you had a slightly different laptop, iirc). Going back to that kernel version should work with dpkg -i but on the other hand would keep you from getting any updates that came along with the newer version. Please let me know whether the boot option above helps. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Released Status in linux in Ubuntu Intrepid: Fix Released Status in linux in Ubuntu Jaunty: Fix Released Status in linux in Ubuntu Karmic: Fix Released Bug description: SRU justification: Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control. Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to. Testcase: Booting on another laptop will not activate the code (which prints a Using less strict video detection... message) but will do with acpi_video_strict_detect=0. In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control. --- Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@Pablo, sorry to hear that and strange. Because the patch should be included in -15.52 as far as I can see. Do you get a message when doing dmesg |grep 'less restr'? If not, you might try to boot with acpi_video_strict_detect=0 and see whether that helps. Maybe you had a version installed, that did not do a check for a certain system (I already wondered why the latest one worked for you as you had a slightly different laptop, iirc). Going back to that kernel version should work with dpkg -i but on the other hand would keep you from getting any updates that came along with the newer version. Please let me know whether the boot option above helps. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
I'm sorry to bother... Yesterday I accepted the updates proposed by the Update Manager, which included a kernel update (version 2.6.28-15.52) and the brightness problem came back. (I know I should have known it could happen but... I have already done it) The main problem now is that I don't knok how to go back. I've tried to install the patch again but the package installer says that there is a newer version installed and doesn't proceed. I'll thank you any help Pablo 2009/8/31 Stefan Bader stefan.ba...@canonical.com Pablo wrote: Sorry, when I saw it was a .deb file I had already sent de message. I had no problem to install and it worked fine. I have an Acer Aspire 5738 Thanks for trying, too. Just wondering: did it work right away or had you to use the command line option? (as I have not encoded a 5738). -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Fix Committed Status in linux in Ubuntu Intrepid: Fix Committed Status in linux in Ubuntu Jaunty: In Progress Status in linux in Ubuntu Karmic: Fix Committed Bug description: Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
This bug was fixed in the package linux - 2.6.28-15.52 --- linux (2.6.28-15.52) jaunty-proposed; urgency=low [ Stefan Bader ] * Revert SAUCE: ACPI: Populate DIDL before registering ACPI video device on Intel - LP: #423296 * SAUCE: Allow less restrictive acpi video detection - LP: #86 [ Upstream Kernel Changes ] * include drivers/pci/hotplug/* in -virtual package - LP: #364916 * ext4: don't call jbd2_journal_force_commit_nested without journal - LP: #418197 * ext4: fix ext4_free_inode() vs. ext4_claim_inode() race - LP: #418197 * ext4: fix bogus BUG_ONs in in mballoc code - LP: #418197 * ext4: fix typo which causes a memory leak on error path - LP: #418197 * ext4: Fix softlockup caused by illegal i_file_acl value in on-disk inode - LP: #418197 * ext4: Fix sub-block zeroing for writes into preallocated extents - LP: #418197 * jbd2: Call journal commit callback without holding j_list_lock - LP: #418197 * ext4: Print the find_group_flex() warning only once - LP: #367065 * ext4: really print the find_group_flex fallback warning only once - LP: #367065 linux (2.6.28-15.51) jaunty-proposed; urgency=low [ Colin Ian King ] * SAUCE: wireless: hostap, fix oops due to early probing interrupt - LP: #254837 [ Leann Ogasawara ] * Add the atl1c driver to support Atheros AR8132 - LP: #415358 * Updating configs to enable the atl1c driver - LP: #415358 [ Stefan Bader ] * Revert SAUCE: input: Blacklist digitizers from joydev.c - LP: #300143 * SAUCE: Fix the exported name for e1000e-next - LP: #402890 * SAUCE: Fix incorrect stable backport to bas_gigaset - LP: #417732 * SAUCE: Remove the atl2 driver from the ubuntu subdirectory - LP: #419438 linux (2.6.28-15.50) jaunty-proposed; urgency=low [ Colin Ian King ] * SAUCE: radio-maestro: fix panics on probe failure - LP: #357724 * SAUCE: HDA Intel, sigmatel: Enable speakers on HP Mini 1000 - LP: #318942 [ Jerone Young ] * SAUCE: Fix Soltech TA12 volume hotkeys not sending key release in Jaunty - LP: #397499 [ John Johansen ] * SAUCE: remove AppArmor debug check for calls from interrupt context - LP: #350789 [ Manoj Iyer ] * SAUCE: Fix kernel panic when SELinux is enabled. - LP: #395219 [ Matthew Garrett ] * SAUCE: ACPI: Populate DIDL before registering ACPI video device on Intel [ Michael Frey (Senior Manager, MID ] * SAUCE: Fix for internal microphone for Dell Mini10V - LP: #394793 [ Tim Gardner ] * SAUCE: Added e1000e from sourceforge. - LP: #402890 [ Upstream Kernel Changes ] * Input: synaptics - report multi-taps only if supported by the device - LP: #399787 * ftdi_sio: fix kref leak - LP: #396930, #376128 * IPv6: add disable module parameter support to ipv6.ko - LP: #351656 -- Stefan Bader stefan.ba...@canonical.com Thu, 27 Aug 2009 15:09:06 +0200 ** Changed in: linux (Ubuntu Jaunty) Status: Fix Committed = Fix Released -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Branch linked: lp:ubuntu/karmic/linux-fsl-imx51 -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
This bug was fixed in the package linux - 2.6.27-14.41 --- linux (2.6.27-14.41) intrepid-proposed; urgency=low [ Stefan Bader ] * Revert SAUCE: input: Blacklist digitizers from joydev.c - LP: #300143 linux (2.6.27-14.40) intrepid-proposed; urgency=low [ Amit Kucheria ] * Disable DEVKMEM for all archs on Intrepid - LP: #354221 * SAUCE: Quirk for BT USB device on MacbookPro to be reset before use - LP: #332443 [ Andy Isaacson ] * LIRC_PVR150: depends on VIDEO_IVTV - LP: #341477 * SAUCE: FSAM7400: select CHECK_SIGNATURE - LP: #341712 [ Andy Whitcroft ] * SAUCE: hotkey quirks for various Zepto Znote and Fujitsu Amilo laptops - LP: #330259 * SAUCE: unusual devs: add an entry for the ScanLogic SL11R-IDE 0.78 - LP: #336189 [ Anton Veretenenko ] * SAUCE: sony-laptop: add support for Sony Vaio FW series function/media keys - LP: #307592 [ Ayaz Abdulla ] * SAUCE: forcedeth: msi interrupt fix - LP: #288281 [ Chuck Short ] * SAUCE: [USB] Unusual Device support for Gold MP3 Player Energy - LP: #125250 [ Ike Panhc ] * squashfs: correct misspelling - LP: #322306 * SAUCE: Fixing symbol name in HECI module - LP: #336549 * Copy header files for various kernel media driver - LP: #322732 [ Stefan Bader ] * SAUCE: vgacon: Return the upper half of 512 character fonts - LP: #355057 * SAUCE: input: Blacklist digitizers from joydev.c - LP: #300143 [ Upstream Kernel Changes ] * libata: make sure port is thawed when skipping resets - LP: #269652 * x86-64: fix int $0x80 -ENOSYS return - LP: #339743 * rt2x00: Fix race conditions in flag handling - LP: #258985 * USB: cdc-acm: Add another conexant modem to the quirks - LP: #323829 * Bluetooth: Add fine grained mem_flags usage to btusb driver - LP: #268502 * Bluetooth: Handle bulk URBs in btusb driver from notify callback - LP: #268502 * Bluetooth: Submit bulk URBs along with interrupt URBs - LP: #268502 * hwmon: (abituguru3) Match partial DMI board name strings - LP: #298798 * x86: mtrr: don't modify RdDram/WrDram bits of fixed MTRRs - LP: #292619 * sis190: add identifier for Atheros AR8021 PHY - LP: #247889 * ath9k: implement IO serialization - LP: #373034 * ath9k: AR9280 PCI devices must serialize IO as well - LP: #373034 * acer-wmi: fix regression in backlight detection - LP: #86 -- Stefan Bader stefan.ba...@canonical.com Wed, 26 Aug 2009 11:48:11 +0200 ** Changed in: linux (Ubuntu Intrepid) Status: Won't Fix = Fix Released -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
I move this to won't fix for Intrepid as that release is too old to justify a backport effort. ** Description changed: + SRU justification: + + Impact: After I carelessly pulled in some updates to the ACPI video + code, we were faced with some regressions. One was (at least) a certain + Acer laptop model that suddenly had no backlight control. + + Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics + definition will be accepted by acpi-video as the right definition lacks + an attribute to be considered, the fix is to have less strict + requirements to that check, so the definition for the right graphics + device gets accepted (a patch doing that unconditionally, has been + submitted upstream and has been acked, but might not make it until + 2.6.32). For the stable tree I created more code which makes sure the + less strict tests only take effect on that laptop or when the user + really wants to. + + Testcase: Booting on another laptop will not activate the code (which + prints a Using less strict video detection... message) but will do + with acpi_video_strict_detect=0. In both cases nothing bad happened. + The affected laptop boots and selects the new check which gives back the + backlight control. + + --- + Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. ** Changed in: linux (Ubuntu Intrepid) Status: Fix Committed = Won't Fix -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
This bug was fixed in the package linux - 2.6.31-10.30 --- linux (2.6.31-10.30) karmic; urgency=low [ Amit Kucheria ] * [Config] Enable CONFIG_USB_DEVICEFS - LP: #417748 * [Config] Populate the config-update template a bit more [ Andy Whitcroft ] * rebase to v2.6.31-rc9 * [Config] update configs following rebase to v2.6.31-rc9 * [Config] update ports configs following rebase to v2.6.31-rc9 [ Colin Ian King ] * SAUCE: wireless: hostap, fix oops due to early probing interrupt - LP: #254837 [ Jerone Young ] * [Upstream] ACPI: Add Thinkpad T400 Thinkpad T500 to OSI(Linux) white-list - LP: #281732 * [Upstream] ACPI: Add Thinkpad X200, X200s, X200t to OSI(Linux) white-list - LP: #281732 * [Upstream] ACPI: Add Thinkpad X300 Thinkpad X301 to OSI(Linux) white-list - LP: #281732 * [Upstream] ACPI: Add Thinkpad R400 Thinkpad R500 to OSI(Linux) white-list - LP: #281732 * [Upstream] ACPI: Add Thinkpad W500, W700, W700ds to OSI(Linux) white-list - LP: #281732 [ John Johansen ] * SAUCE: AppArmor: Fix profile attachment for regexp based profile names - LP: #419308 * SAUCE: AppArmor: Return the correct error codes on profile addition/removal - LP: #408473 * SAUCE: AppArmor: Fix OOPS in profile listing, and display full list - LP: #408454 * SAUCE: AppArmor: Fix mapping of pux to new internal permission format - LP: #419222 * SAUCE: AppArmor: Fix change_profile failure - LP: #401931 * SAUCE: AppArmor: Tell git to ignore generated include files - LP: #419505 [ Stefan Bader ] * [Upstream] acpi: video: Loosen strictness of video bus detection code - LP: #86 * SAUCE: Remove ov511 driver from ubuntu subdirectory [ Tim Gardner ] * [Config] Exclude char-modules from non-x86 udeb creation * SAUCE: Notify the ACPI call chain of AC events * [Config] CONFIG_SATA_VIA=m - LP: #403385 * [Config] Build in all phylib support modules. * [Config] Don't fail when sub-flavour files are missing - LP: #423426 * [Config] Set CONFIG_LSM_MMAP_MIN_ADDR=0 - LP: #423513 [ Upstream ] * Rebased against v2.6.31-rc9 -- Andy Whitcroft a...@canonical.com Mon, 07 Sep 2009 11:33:45 +0100 ** Changed in: linux (Ubuntu Karmic) Status: Fix Committed = Fix Released -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Tags added: verification-done ** Tags removed: verification-needed -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Hi all, I have the same problem you have described with my Aspire 8930g. Brightness works with Intrepid beta live cd (2.6.27-4) but doesn't works with Jaunty live cd. I've tried also with Sabayon and Arch with post 2.6.27 kernel and it doesn't work, so it seems that it's a kernel issue and it has to be fixed in the vanilla sources. I haven't tried the patched kernel yet because now I have Arch installed. So I ask: will this bug be fixed only in Ubuntu version of the kernel or also in the official Linux sources? ** Changed in: linux (Ubuntu Karmic) Status: Fix Committed = Fix Released ** Changed in: linux (Ubuntu Karmic) Status: Fix Released = Fix Committed -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Sorry for the status change, i'm new in launchpad :\ -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
With a similar BIOS problem, brightness will not work on kernels after 2.6.28 and before the submitted patch hits upstream. It has been submitted but probably gets not included before 2.6.32 ** Changed in: linux (Ubuntu Jaunty) Status: In Progress = Fix Committed -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
The fixed kernel worked for me too, without command line option at boot! (Jaunty, aspire 8930g) Thank you -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Not automatically as it is in the process at a time when it not gets into 2.6.31 final but rather 2.6.32. But I currently try to get it pro-actively into Karmic as well. The function keys might probably work. I did see that your BIOS definitions have another bug with the brightness levels, which I believe is handled in Karmic (normally the first two values are supposed to be the levels for on-ac and on-battery and are handled differently, but your bios just has real levels in it). So I would suggest to try out karmic (not yet but next alpha or beta). If it has brightness control but still the FN-key problem, it would be good to open a new bug for that. The problem is different and the more specific we are in a bug, the better to handle it. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Pablo wrote: Sorry, when I saw it was a .deb file I had already sent de message. I had no problem to install and it worked fine. I have an Acer Aspire 5738 Thanks for trying, too. Just wondering: did it work right away or had you to use the command line option? (as I have not encoded a 5738). -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Also affects: linux (Ubuntu Karmic) Importance: Medium Assignee: Stefan Bader (stefan-bader-canonical) Status: Confirmed ** Changed in: linux (Ubuntu Karmic) Status: Confirmed = Fix Committed -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@gidantribal: @Pablo: can you experience the same behaviour of FN keys I experienced (please see my comment above [#88] on FN keys).. Have you got an Acer Aspire 6920G? I didn't experience the same behaviour you told. Fn keys work fine but with a very small increment on each key-stroke, which makes it quite irritating (it's worse while you go to the less-bright side), but I've managed whith the panel bright-control. I've found strange behaviour when connecting and disconnecting the power-adapter, but just don't care about this: @Stefan: Thanks for trying, too. Just wondering: did it work right away or had you to use the command line option? (as I have not encoded a 5738). It worked right away. Thanks -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@Pablo: can you experience the same behaviour of FN keys I experienced (please see my comment above [#88] on FN keys).. Have you got an Acer Aspire 6920G? -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
@Stefan Bader: I'm glad to hear this patch will be put in the default kernel... it means it will be included also in karmic, doesn't it? About FN keys... do you mean it will be faced in Karmic as new bug and just ignored in jaunty? -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Could you explain to me what should I do to install de kernel? Please think in a step by step explanation. Thanks, Pablo Ferrari 2009/8/27 Stefan Bader stefan.ba...@canonical.com I finally found time to think of a version that might be acceptable to get into Jaunty. I placed the kernels at the usual location at http://people.canonical.com/~smb/bug86/. In theory this should detect your system, print a Using less strict video detection message in dmesg and the brightness control should work. If this fails (because I messed up the check) there is a second way by using acpi_video_strict_detect=0 as a boot parameter. Please let me know how this works for you. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Confirmed Status in linux in Ubuntu Intrepid: Fix Committed Status in linux in Ubuntu Jaunty: In Progress Bug description: Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Sorry, when I saw it was a .deb file I had already sent de message. I had no problem to install and it worked fine. I have an Acer Aspire 5738 Fn keys work too, but I found a couple of isues: * when using the Fn keys and you're near the less bright side it moves very slowly (doesn't occur near the more bright side) * It has a curious behaviour when connecting and disconnecting the power adapter: sometimes changes brightness, sometimes not. Sometimes changes too much, sometimes just to the half bright. And sometimes it changes even if you don't do anything. I hope it would help. I'm not an expert user, buy I offer my simple-user experience. Thanks to all of you 2009/8/28 Pablo Javier Ferrari Ferrando pjfe...@gmail.com Could you explain to me what should I do to install de kernel? Please think in a step by step explanation. Thanks, Pablo Ferrari 2009/8/27 Stefan Bader stefan.ba...@canonical.com I finally found time to think of a version that might be acceptable to get into Jaunty. I placed the kernels at the usual location at http://people.canonical.com/~smb/bug86/. In theory this should detect your system, print a Using less strict video detection message in dmesg and the brightness control should work. If this fails (because I messed up the check) there is a second way by using acpi_video_strict_detect=0 as a boot parameter. Please let me know how this works for you. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a direct subscriber of a duplicate bug. Status in “linux” package in Ubuntu: Confirmed Status in linux in Ubuntu Intrepid: Fix Committed Status in linux in Ubuntu Jaunty: In Progress Bug description: Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
I finally found time to think of a version that might be acceptable to get into Jaunty. I placed the kernels at the usual location at http://people.canonical.com/~smb/bug86/. In theory this should detect your system, print a Using less strict video detection message in dmesg and the brightness control should work. If this fails (because I messed up the check) there is a second way by using acpi_video_strict_detect=0 as a boot parameter. Please let me know how this works for you. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
oki i'm going to install it -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
brightness works out of the box (without boot parameter) with your proposed kernel... here DMESG detail: [8.769760] acer-wmi: Acer Laptop ACPI-WMI Extras [8.770046] ACPI: Using less restrictive video detection [8.770047] acer-wmi: Brightness must be controlled by generic video driver [8.770119] acer-wmi: software RFKILL enabled Anyway FN-keys issue is still present, the same as before: [Initial status of the machine is BRIGHTNESS_MAX] If I press FN+BRIGHTNESS_DOWN just once It increases (correctly) to BRIGHTNESS_MAX-1 but then *immediately* goes to BRIGHTNESS_MIN (wrong) [Initial status of the machine is BRIGHTNESS_MIN] If I press FN + BRIGHTNESS_UP just once It increases to BRIGHTNESS_MAX+1 (correctly) but then immediately increases again, so finally it goes to BRIGHTNESS_MAX+2 (wrong) If I press FN + BRIGHTNESS_UP again It returns to BRIGHTNESS_MAX+1 (wrong) [...] view old message for details... ** Attachment added: dmesg.txt http://launchpadlibrarian.net/30914639/dmesg.txt -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Thanks for the quick test. I'll try to get that into the default kernel then. Unfortunately for the problem with the key I would not put too much hope into getting it fixed in Jaunty. Karmic is nearing its Beta and more effort will go into that. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
I think from the debugging point you could update, but as I did not have time to work on a special patch, you would be back to no brightness control. Which probably matters more. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
yes, i'll keep the patched version until issue is solved i think. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Summary changed: - Cannot change brightness with 2.6.27-11+ kernel + Acer: Cannot change brightness with 2.6.27-11+ kernel -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Here's my dmidecode output, hope it helps. Great job done so far btw! ** Attachment added: dmidecode http://launchpadlibrarian.net/29713787/dmidecode -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
Ps. Now kernel version is *.14 but I can't update if I want to keep my notebook ready for debug.. how can I proceed? a new modified kernel version could be a temporary solution, but maybe it would be better to just have a modified module version. -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 333386] Re: Acer: Cannot change brightness with 2.6.27-11+ kernel
** Tags added: hw-specific -- Acer: Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/86 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
