Hi Martin,
thank you for sharing your exxperience. Seems you had a more difficult time than Swissz, but found a solution.
I will test on a non prodduction 20.04 and see how it goes.
Regards
On Thursday, January 6, 2022, 08:16:01 AM CST, Martin Sorgatz <email address hidden> wrote:
I have an old computer with Ubuntu 18.04 LTS where simple scan works fine with an HP Envy printer/scanner.
Now I got a new computer and installed 20.04 LTS where the simple scan shows this issue with the same scanner.
The downgrade of libsane-genesys.so from 1.0.29 to 1.0.27 (I took it from the old computer) does not help on 20.04.
Maybe there are some more bugs in libsane that are already fixed in Ubuntu 21.04?
So I copied the complete /usr/lib/x86_64-linux-gnu/sane/ directory from 18.04. to the 20.04 installation as "sane-old", including the libsane.so.1.0.27 from the directory level above.
I created a shell script that starts simple-scan with LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/sane-old.
But it did not work. I checked the process which libs are loaded (using sudo pldd <pid>).
It loaded mostly the libs from sane-old, but there were still two of the original libs:
.../sane/libsane-ricoh2.so.1
.../sane/libsane-escl.so.1
Then (in /usr/lib/x86_64-linux-gnu) I renamed the "sane" directory to "sane-hidden".
Now (without LD_LIBRARY_PATH) no more original lib from the original subdirectory is used any more (except the top level libsane.so.1 from 1.0.29).
=> Now brightness and contrast can be applied as expected!
Title:
Ubuntu 20.04 simple-scan brightness and contrast controls have no
effect
Status in Simple Scan:
Unknown
Status in simple-scan package in Ubuntu:
Incomplete
Bug description:
Ubuntu 20.04 simple-scan. The Brightness and Contrast controls have
no effect. No matter how I position the sliders the scan image
remains the same, ie, a dark background. It is as if the controls are
not 'connected'.
Ubuntu 20.04 is up to date. The scanner is a Cannon LiDE60.
I have 19.10 in another partition. Simple-scan works as expected.
Ditto for 18.04.
Hi Martin,
thank you for sharing your exxperience. Seems you had a more difficult time than Swissz, but found a solution.
I will test on a non prodduction 20.04 and see how it goes.
Regards
On Thursday, January 6, 2022, 08:16:01 AM CST, Martin Sorgatz <email address hidden> wrote:
I have an old computer with Ubuntu 18.04 LTS where simple scan works fine with an HP Envy printer/scanner.
Now I got a new computer and installed 20.04 LTS where the simple scan shows this issue with the same scanner.
The downgrade of libsane-genesys.so from 1.0.29 to 1.0.27 (I took it from the old computer) does not help on 20.04. x86_64- linux-gnu/ sane/ directory from 18.04. to the 20.04 installation as "sane-old", including the libsane.so.1.0.27 from the directory level above. PATH=/usr/ lib/x86_ 64-linux- gnu/sane- old. libsane- ricoh2. so.1 libsane- escl.so. 1
Maybe there are some more bugs in libsane that are already fixed in Ubuntu 21.04?
So I copied the complete /usr/lib/
I created a shell script that starts simple-scan with LD_LIBRARY_
But it did not work. I checked the process which libs are loaded (using sudo pldd <pid>).
It loaded mostly the libs from sane-old, but there were still two of the original libs:
.../sane/
.../sane/
Then (in /usr/lib/ x86_64- linux-gnu) I renamed the "sane" directory to "sane-hidden".
Now (without LD_LIBRARY_PATH) no more original lib from the original subdirectory is used any more (except the top level libsane.so.1 from 1.0.29).
=> Now brightness and contrast can be applied as expected!
-- /bugs.launchpad .net/bugs/ 1888238
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Title:
Ubuntu 20.04 simple-scan brightness and contrast controls have no
effect
Status in Simple Scan:
Unknown
Status in simple-scan package in Ubuntu:
Incomplete
Bug description:
Ubuntu 20.04 simple-scan. The Brightness and Contrast controls have
no effect. No matter how I position the sliders the scan image
remains the same, ie, a dark background. It is as if the controls are
not 'connected'.
Ubuntu 20.04 is up to date. The scanner is a Cannon LiDE60.
I have 19.10 in another partition. Simple-scan works as expected.
Ditto for 18.04.
Regards.
ProblemType: Bug gnature: Ubuntu 5.4.0-40.44-generic 5.4.44 kResult: skip edia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) DIR=<set> Line: BOOT_IMAGE= /boot/vmlinuz- 5.4.0-40- generic root=UUID= dc547d11- 1deb-404b- 988a-a88d4772e6 6d ro quiet splash vt.handoff=7
DistroRelease: Ubuntu 20.04
Package: simple-scan 3.36.0-0ubuntu1
ProcVersionSi
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5Chec
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 20 09:47:52 2020
InstallationDate: Installed on 2020-05-12 (68 days ago)
InstallationM
MachineType: Hewlett-Packard HP EliteBook 8570p
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmd
SimpleScanLog:
SourcePackage: simple-scan version: KBC Version 42.32 asset.tag: 8022456 vendor: Hewlett-Packard Packard: bvr68ICFVer. F.32:bd12/ 05/2012: svnHewlett- Packard: pnHPEliteBook85 70p:pvrA1029D11 02:rvnHewlett- Packard: rn17A7: rvrKBCVersion42 .32:cvnHewlett- Packard: ct10:cvr: family: 103C_5336AN G=N L=BUS B=HP S=ELI version: A1029D1102
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68ICF Ver. F.32
dmi.board.name: 17A7
dmi.board.vendor: Hewlett-Packard
dmi.board.
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.
dmi.modalias: dmi:bvnHewlett-
dmi.product.
dmi.product.name: HP EliteBook 8570p
dmi.product.sku: D2C13UP#ABA
dmi.product.
dmi.sys.vendor: Hewlett-Packard
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